imx: mx6sxsabresd: enable CONFIG_SPL_FAT_SUPPORT

Enable CONFIG_SPL_FAT_SUPPORT to load u-boot.img from FAT partition.

Signed-off-by: Peng Fan <Peng.Fan@freescale.com>
Reviewed-by: Stefano Babic <sbabic@denx.de>
1 file changed