arm: sunxi: Enable DM_MMC

Enable DM_MMC for all Allwinner SoCs, this will eventually
enable BLK.

Also removed DM_MMC enablement in few parts of sunxi
configurations.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index cefa8f4..f0edb10 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -851,6 +851,7 @@
 	select DM_ETH
 	select DM_GPIO
 	select DM_KEYBOARD
+	select DM_MMC if MMC
 	select DM_SERIAL
 	select DM_USB if DISTRO_DEFAULTS
 	select OF_BOARD_SETUP
diff --git a/arch/arm/mach-sunxi/Kconfig b/arch/arm/mach-sunxi/Kconfig
index 3c54f51..74e234c 100644
--- a/arch/arm/mach-sunxi/Kconfig
+++ b/arch/arm/mach-sunxi/Kconfig
@@ -154,7 +154,6 @@
 	bool "sun4i (Allwinner A10)"
 	select CPU_V7A
 	select ARM_CORTEX_CPU_IS_UP
-	select DM_MMC if MMC
 	select DM_SCSI if SCSI
 	select PHY_SUN4I_USB
 	select DRAM_SUN4I
diff --git a/configs/Linksprite_pcDuino3_defconfig b/configs/Linksprite_pcDuino3_defconfig
index 9156f13..18f658e 100644
--- a/configs/Linksprite_pcDuino3_defconfig
+++ b/configs/Linksprite_pcDuino3_defconfig
@@ -14,7 +14,6 @@
 # CONFIG_SPL_EFI_PARTITION is not set
 CONFIG_DEFAULT_DEVICE_TREE="sun7i-a20-pcduino3"
 CONFIG_SCSI_AHCI=y
-CONFIG_DM_MMC=y
 CONFIG_ETH_DESIGNWARE=y
 CONFIG_MII=y
 CONFIG_SUN7I_GMAC=y