ieee802154 MAC: Free allocated TX descriptor if an error occurs after the descriptor has been allocated.

ieee802154_req_data:  Don't modify the IOB until we are certain that no EINTR errors will occur.  Otherwise, the retry will fail

ieee802154 network driver now retries if ieee802154_req_data() returns EINTR.  In clicker2-stm32 6LoWPAN configuration, increased the number of TX descriptors to match then number of IOBs.

6LoWPAN: Add debug statements; Update configuration, need to specific 6LoWPAN compatible port numbers.

wireless/ieee802154: Cleans up some endianness issues and fixes poll request issue

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

/configs/clicker2-stm32/mrf24j40-6lowpan: Enables both client and server UDP tests on the target; Update a README file.

Update TODO, enable UDP example in clicker1-stm32/mrf24j40-6lowpan example, make sure that CONFIG_EXAMPLES_UDP_NETINIT is set in all other examples/udp configurations.

stm32_adc: invalidate dma buffer before use.  Missing invalidation caused old samples being fetched from cache.

Support listening sockets in the getsockname function

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

Throw error when error happens in the tcp_listen function

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

Swithches IEEE 802.15.4 based code to using byte arrays instead of uint16_t values for short address and PAN ID

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

Swithches IEEE 802.15.4 based code to using byte arrays instead of uint16_t values for short address and PAN ID

IEEE 802.15.4 Network Driver:  Add logic to setup the network mask, update the MAC-based IPv6 addressing when the network is brought up.  The idea is that addressing changes are supposed to occur only while the network is down but won't take effect until the network is up again.

ieee 802.15.4:  Need counting protection on the logic that releases the notification resources.  Otherwise, notification handlers may be operating with a stale pointer.

IEEE 802.15.4 MAC: Add list management and prioritization logic that will permit the MAC layer to support bound multiple clients.

stm32_hrtim

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

wireless/ieee802154: Renames Kconfig option, adds option for unimplemented receiver priority.

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