mmc: fsl_esdhc_imx: Add a compatible for i.MX51

Add a compatible for i.MX51 so that i.MX51 can use this driver
via driver model.

Signed-off-by: Fabio Estevam <festevam@gmail.com>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
1 file changed