ARM: Odroid XU3: Enable driver model support for MMC (DM_MMC)

This commit enables support for DW_MMC running with driver model.

Signed-off-by: Lukasz Majewski <lukma@denx.de>
Tested-by: Anand Moon <linux.amoon@gmail.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
diff --git a/configs/odroid-xu3_defconfig b/configs/odroid-xu3_defconfig
index 6398c2c..632542d 100644
--- a/configs/odroid-xu3_defconfig
+++ b/configs/odroid-xu3_defconfig
@@ -29,6 +29,7 @@
 CONFIG_ADC=y
 CONFIG_ADC_EXYNOS=y
 CONFIG_DFU_MMC=y
+CONFIG_DM_MMC=y
 CONFIG_MMC_DW=y
 CONFIG_NETDEVICES=y
 CONFIG_SMC911X=y