Squashed commit of the following:

    arch/arm/src/kinetis:  Add K28F memory map.
    arch/arm/src/include/kinetis and src/kinetis:  Add basic chip features and interrupt-related definitions for the K28F

configs/nrf52-pca10040:  Fix an error in the name of an included file.  This was introduced with the previous change to this file.

progmem interface: Discern r/w and erase page sizes.  Introduce new up_progmem_erasesize architecture API to be able to communicate the read/write page size independently from erase page size.  Implement up_progmem_erasesize for all architectures that already support progmem, assuming that for those architectures the sizes of both read/write and erase pages are identical.

arch/arm/src/nrf52:  Fix several inconsistencies in naming.  Mostly cosmetic but one was causing a compiler warning.

include/nuttx/wireless/bluetooth:  Move Bluetooth header files from include/nuttx/wireless to include/nuttx/wireless/bluetooth for symmetry with other wireless technologies.

arch/arm/src/tiva:  Implemented Flash CONFIG_MTD_BYTE_WRITE for TM4c1294.  Implemented the tiva_write function which will write an arbitrary number of bytes to flash (in multiple of 4).

arch/arm/src/tiva:  Implements an EEPROM driver in compliance with MTD driver as provided by NUTTX for TM4C1294.  The EEPROM driver currently supports only two functionalities - read bytes(multiple of 4) and write bytes (multiple of 4).

Squashed commit of the following:

Author: Gregory Nutt <gnutt@nuttx.org>
    Fix some spacing
    arch/arm/src/tiva:  Verify that the EEPROM driver at least builds.
    arch/arm/src/tiva:  Move unused function added to tm4c129_syscontrol.c to tiva_eeprom.c where it is actually used.
    arch/arm/src/tiva:  Reorganize EEPROM register definitions so that the file organization is more like other platforms.
    arch/arm/src/tiva:  Trying to resolve EEPROM register addressing.  Still some issues.
    arch/arm/src/tiva:  Ran uncrustify on tiva_eeprom.c
    arch/arm/src/tiva:  EEPROM driver is a little closer to coding standard.  Still a way to go.

Author: Shirshak Sengupta <sgshirshak@gmail.com>
    arch/arm/src/tiva: Implemented EEPROM driver in compliance with MTD driver as provided by NUTTX for TM4C1294. The EEPROM driver needs to be initialized by calling the function tiva_EEPROMInit The EEPROM driver currently supports only two functionalities - read bytes(multiple of 4) and write bytes (multiple of 4). Note - Rest of the features of EEPROM will be implemented in the future.

Makefile.unix:  There is a sort command in the 'make savedefconfig' file.  I found that sort behaves differently on different platforms based on the environment variable LC_ALL.  Now, Makefile.unix will force LC_ALL=C just for the sort command so that we can all generate equivalent defconfig files.

kinetis usb device fixes

* kinetis:usb device use correct CONFIG OTG control

* kinetis:usb device fix interrupt storm when cable is disconnected

      The DM, DP state were incorrect because the pulldowns were not
      enabled.

      Also the pending asynchronous resume interrupt needed to be
      re-armed after the suspend is in effect. This is now done in
      the isr.

Approved-by: Gregory Nutt <gnutt@nuttx.org>

fs/vfs and net/udp:  Repartition logic of commit 0c963449, moving into net/udp.  Add support to handle connected UDP sockets.  The correct 'optimal blksize' to return is the MSS.  The MTU is always too big.

net/udp:  Correct an error introduce in recent fixes for UDP connected sockets.  The interaction between psock_udp_send() and psock_udp_sendto() was perverse:  It should always pass a NULL destinatino address.

This commit adds basic architectural support for the OpenRISK mor1kx architecture.  The initial commit was verified on a Qemu simulation but is otherwise untested.

Squashed commit of the following:

Author: Gregory Nutt <gnutt@nuttx.org>
    Update README.
    configs/or1k:  Should include header file file where exported functin is prototyped.
    arch/or1k/src:  Eliminate some warnings.
    arch/or1k:  Complete review
    Fix some recently introduced build issues
    configs/or1k/nsh:  Convert to proper, compressed defconfig file.
    Another README update.
    Update README
    configs/or1k:  Updates from initial review.
    Update README.

Author: Matt Thompson <matt@extent3d.com>

    or1k: Added configurable CPU frequency to Kconfig. Calculate tick timer match period based on configured frequency.
    OpenRISC: Enable instruction and data cache
    OpenRISC: Initial support.

configs/photon:  Refresh all configurations.  configurations the use the SDIO card interface must support CONFIG_STM32_SDIO_CARD.

drivers/wiresless/ieee80211:  Correct some initialization problems with BCM43362 chip.  Adds BCM43428 support.  arch/arm/src: Add support for SDIO card to SDIO driver.

Squashed commit of the following:

Author: Gregory Nutt <gnutt@nuttx.org>
    include/nuttx/wireless/ieee80211:  Cosmetic, coding standard changes from review of last merge.
    drivers/wireless/ieee80211:  Cosmetic, coding standard changes from review of last merge.
    configs/photon:  Cosmetic, coding standard changes from review of last merge.
    arch/arm/src/stm32:  SDIO changes from last review:  Fix a few long lines and other coding standard issues; Make additions for SDIO card support dependent on a configuration option.

Author: hhuysqt <hyq9606@126.com>
    Return IEEE 802.11 MAC address just as ethernet does
    Modifyed bcmf_board_setup_oob_irq declaration
    Modified OOB ISR function types
    Add some logic according to WICED SDK
    Bug fixed: data_offset counts in 4-bytes
    Add BCM43438 logic for future developement
    Add tips on using telnet
    Use SDIO in-band interrupt instead of OOB interrupt, because Photon seems to unconnect the OOB interrupt line...
    add SDIO in-band interrupt logic

arch/arm/src/imxrt:  Minor reparitioning to account for the fact that the GPIO5 base address is not contiguous with the GPIO1-4 base addresses.

include/nuttx/wireless:  Add a setbaud() method to the HCI UART lower half interface that can be used to change the default BAUD selection.  arch/arm/src/stm32:  Implement the setbaud() method for the STM32 HCI UART.

net/udp:  Minor update from review of 091e3f73.  In connect(), AF_UNSPEC is used to disconnect UDP socket.  However, initial commit lacked logic to mark the socket as disconnected.

net/udp:  Fix several issues using connected UDP sockets:  sendto() should not accept and address.  Normally send() should be used instead.  recvfrom() is no longer necessary.  recvfrom() and poll() should not reset to accept any addresses but should, instead, only accept inputs and events from the connected remore peer.  On of these issues was noted by 李桂丁 <liguiding@pinecone.net>.  Changes were made as summarized here: http://www.masterraghu.com/subjects/np/introduction/unix_network_programming_v1.3/ch08lev1sec11.html

tools/configure.sh:  Fix last commit.  If gmake is not present, then 'which gmake' spews a lot of annoying error messages when configuring.  Best to pipe stderr to /dev/null so that we are blessedly unaware of the failures.

Add clang support to stm32f746g-disco board

Approved-by: Gregory Nutt <gnutt@nuttx.org>