[PATCH V2] mmc: display an error number to debug

[Stephen Warren]

On 11/16/20 3:04 PM, Jaehoon Chung wrote:
> It's useful to know an error number when it's debugging.
> 
> Signed-off-by: Jaehoon Chung <jh80.chung at samsung.com>
> Reviewed-by: Peng Fan <peng.fan at nxp.com>
> ---
> Changelog on V2
> - Change from "put" to "printf" to fix build error

Note that v1 was already applied to u-boot-mmc/master, which is how I
noticed the original issue; you might need to send a patch with just the
delta between the two versions.