drivers/i2c and drivers/spi:  Fix compile if CONFIG_DISABLE_PSEUDOFS_OPERATIONS, fix bad NULL checks

stm32_hrtim: add repetition support and fix enum overflow

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

drivers/lcd:  Add FT80x controls for the case where the audio amplifier is controlled by FT80x GPIOs vs MCU gpios.

arch/arm/src/stm32f7: Backport RTC alarm setting changes from STM32L4.  Most notably this fixes RTC getting stuck issue when both alarms were used. Root cause was writing RTC ISR register contents to RTC CR register.

Fixed parsing of DNS response packets having compressed names ending with pointer.

There were troubles parsing response packets which have compression of
QNAME/NAME field when only trailing part of the name (not the whole name)
is replaced with pointer to another part of the packet.
This commit fixes parsing of such packets.

Also I added checks to keep parsing only in bounds of the read part
of DNS response packet.

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

configs/viewtool-stm32f107:  Add support for FT80X initialization.  Add ft80x configuration that will eventually be used for testing the ft80x if I ever receive hardware.

lc823450 dvfs auto

* arch/arm/src/lc823450: Fix up_enable_irq() timing for I2S.

    In previous commit, I2S IRQ might be sometimes assigned to CPU1
    when CONFIG_SMP=y. This change fixes this issue.

Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>

* arch/arm/src/lc823450: Refactor timer driver.

    Introduce lc823450_timer.h and move lc823450_timerisr.c to
    lc823450_timer.c Add MTM timer APIs for DVFS.  Introduce
    up_rtc_gettime() for CONFIG_RTC_HIRES.

Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>

* arch/arm/src/lc823450: Introduce idle time calculation in DVFS

    Also, DVFS autonomous mode based on CPU idle time is supported.
    NOTE: voltage control is still disabled.

Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>

* configs/lc823450-xgevk: Update defconfigs

    Enable RTC_HIRES instead of RTC_DATETIME (audio/rndis)
    Disable TCP_WRITE_BUFFERS and change SCHED_LPWORKPRIORITY (rndis)

Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>

* configs/lc823450-xgevk: Update README.txt

    Update SMP and DVFS related part

Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>

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

net/tcp: tcp_send_[un]buffered.c:  Check routing table in psock_send_addrchck().  Previously only ARP table was considered when determining if the data will actually be sent.

    drivers/lcd:  Add an IOcTL to FT80x driver to write to FIFO CMD RAM.

Added ECANCELED condition to DEBUGASSERT-s checking sem_wait result

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

Fixed misprint in ipv4_forward.c

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

Author: Juha Niskanen <juha.niskanen@haltian.com>
Date:   Mon Feb 19 15:03:17 2018 -0600

    drivers/mtd:  mtd_config.c:  Add still more error handling (to detect bad underlying flash implementations)
    drivers/mtd:  mtd_config.c:  Remove MTD_ERASE that was erasing data block instead of erase block.  This is a partial revert of 4f18b4.  Reported-by: Pascal Speck <iktek01@yahoo.com>
    arch/arm/src/stm32l4:  stm32l4_flash: change flash programming to use page buffer for unaligned writes.

configs/stm32f746g-disco: Add stm32f746g-disco Ethernet configuration. Add USART1 support (connected to the USB virtual serial port)

    drivers/lcd and include/nuttx/lcd:  Add FT80x support for writing to graphics memory.  Also add some definitions needed by apps/examples/ft80x for bitmap manipulation.
    drivers/lcd:  Review/update FT80x initializatin logic

drivers/lcd: Detect and handle more errors in return values within the LCD framebuffer and SSD1306 drivers

include/nuttx/lcd:  Add some FT80x definitions and modify some structures in order to support apps/examples/ft80x.

drivers/lcd:  In order to actually use the new register access IOCTL calls, need to move the register address definitions out of the private header file and into the public header file.

    drivers/lcd:  Rename ft80x_base.c to just ft80x.c.  Add logic to notify FT80X clients of events via signals.
    drivers/lcd:  Trivial updates to naming.  Add some new definitions.