mmc: Rename MMC_SUPPORT to MMC

Rename these options so that CONFIG_IS_ENABLED can be used with them.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
[trini: Fixup some incorrect renames]
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/arch/arm/mach-imx/mx6/Kconfig b/arch/arm/mach-imx/mx6/Kconfig
index cb85ad2..55de6a9 100644
--- a/arch/arm/mach-imx/mx6/Kconfig
+++ b/arch/arm/mach-imx/mx6/Kconfig
@@ -304,7 +304,7 @@
 	select SPL_LIBCOMMON_SUPPORT if SPL
 	select SPL_LIBDISK_SUPPORT if SPL
 	select SPL_LIBGENERIC_SUPPORT if SPL
-	select SPL_MMC_SUPPORT if SPL
+	select SPL_MMC if SPL
 	select SPL_OF_CONTROL if SPL
 	select SPL_OF_LIBFDT if SPL
 	select SPL_PINCTRL if SPL