mmc: fsl_esdhc: support i.MX7ULP

Add compatible property for i.MX7ULP.
Add a weak init_usdhc_clk function, i.MX7ULP use this to init the clock.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
Reviewed-by : Stefano Babic <sbabic@denx.de>
1 file changed