uboot-imx

board: sama5d2_xplained: Move config options to defconfigs

Move the config options from the include/configs/sama5d2_xplained.h
to configs/sama5d2_xplained_*_defconfig.

Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
Reviewed-by: Andreas Bießmann <andreas.devel@googlemail.com>