mmc: add the device name in debugging message for supplying vmmc

If vmmc didn't supply, we didn't know which card didn't supply vmmc.
And changed from "put" to "debug".

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