so the lower half driver don't need include the specific board.h
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
Change-Id: Icf6638a6865bac42150b5957376e55909f041d40
and let USERLED_LOWER depends on ARCH_HAVE_LEDS instead
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
Change-Id: Ie03e76d90b61a3d8d3457ccdd319a247b6075fa8
configs/stm32f4discovery/src: Add board support to MAX7219 as numeric display controller
drivers/leds/max7219.c: Add support to MAX7219 to control 7-segment displays