Specify the UFS device-reset gpio for db845c and mtp, so that the
controller will issue a reset of the UFS device.

Link: https://lore.kernel.org/r/20190828191756.24312-4-bjorn.andersson@linaro.orgSigned-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Avri Altman <Avri.Altman@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>