imx8mp-msc-sm2s: Add mmc aliases

Add mmc alias so that the eMMC is mmc0 and the SD card
is mmc1 to have a well defined device numbering scheme.

Signed-off-by: Fabio Estevam <festevam@denx.de>
Reviewed-by: Ian Ray <ian.ray@gehealthcare.com>
1 file changed