mmc: dw_mmc: fix the wrong setting for UHS-DDR50 mode
mmc: dw_mmc: fix the wrong setting for UHS-DDR50 mode

When card is running with DDR mode, dwmmc needs to set DDR_REG bit at
UHS_REG register.
Before this patch, dwmmc controller doesn't consider this.
If this patch is not applied, CRC or other error shoulds be occurred.

Signed-off-by: Jaehoon Chung <6d67df43a1b10a02c7c04e8346f9d9ca207335e5@samsung.com>
Reviewed-by: Alim Akhtar <244a44a805195452b40efb5e9446b8380b31da82@samsung.com>
Signed-off-by: Ulf Hansson <fe47b31f388f85ce6ddf64bf3a0cf6b46077d0e6@linaro.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs