boards: arm: add board revision to board description
boards: arm: add board revision to board description

add board revision number to board description (MB1319C)

Signed-off-by: Guðni Már Gilbert <a67b89b8b42b5e36ccc84f3061af0045ff2a5bff@gmail.com>

zephyrproject-rtos/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,galak/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr,finikorg/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,finikorg/zephyr,finikorg/zephyr