mmc: fsl_esdhc: add uclass clk support

When CONIFG_CLK is enabled, use uclass clk api to handle
the clock.

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