Also redefine GPIOs even after WDS canned config.
Also enable more ints.

add success checks in packet handler config
enable pullups on gpios
add code to customize irq enabling
setup rx_start to go back to rx on rx timeout.
display more int status

also fix upper half ioctl

drivers/wireless/ieee802154/Make.defs
    Changes to the build infrastructure to include the mrf24j40 driver

include/nuttx/spi/spi.h
    Define a IEEE SPI device

include/nuttx/wireless/ieee802154/ieee802154_radio.h
    This file defines the API of a IEEE 802.15.4 radio device, to be used by the future common MAC 802.15.4 layer

drivers/wireless/ieee802154/mrf24j40.c
drivers/wireless/ieee802154/mrf24j40.h
    The main MRF24J40 IEEE 802.15.4 radio driver

include/nuttx/wireless/ieee802154/mrf24j40.h
    This file allows instanciation of the MRF24j40 driver from board configurations

Move the remaining files from include/nuttx/net/uip to include/nuttx/net; Rename *_internal.h header files in net/ to just *.h

Eliminated sam3u_internal.h. Use separate header files instead.  More renaming from sam3u_ to sam_ to make room in the namespce for the sam4l_

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5534 42af7a65-404d-4744-a932-0658087f49c3

Rename LM3S files, variables, and types from lm3s_ to lm_; Rename configuration variables from CONFIG_LM3S_ to CONFIG_LM_

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5497 42af7a65-404d-4744-a932-0658087f49c3

Rename LM3S files, variables, and types from lm3s_ to lm_; Rename configuration variables from CONFIG_LM3S_ to CONFIG_LM_

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5497 42af7a65-404d-4744-a932-0658087f49c3