imx6: generic MMC config options to mx6_common

Move all standard mx6 MMC configs to mx6_common.

Signed-off-by: Peter Robinson <pbrobinson@gmail.com>
Reviewed-by: Tom Rini <trini at konsulko.com>
diff --git a/include/configs/mx6_common.h b/include/configs/mx6_common.h
index c323038..c9cd648 100644
--- a/include/configs/mx6_common.h
+++ b/include/configs/mx6_common.h
@@ -93,4 +93,12 @@
 #define CONFIG_MXC_GPIO
 #define CONFIG_CMD_GPIO
 
+/* MMC */
+#define CONFIG_MMC
+#define CONFIG_CMD_MMC
+#define CONFIG_GENERIC_MMC
+#define CONFIG_BOUNCE_BUFFER
+#define CONFIG_FSL_ESDHC
+#define CONFIG_FSL_USDHC
+
 #endif