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/configs/ci20_mmc_defconfig b/configs/ci20_mmc_defconfig
index ffc4f0a..363bdfd 100644
--- a/configs/ci20_mmc_defconfig
+++ b/configs/ci20_mmc_defconfig
@@ -10,7 +10,7 @@
 CONFIG_SYS_MALLOC_LEN=0x4000000
 CONFIG_DEFAULT_DEVICE_TREE="ci20"
 CONFIG_SPL_TEXT_BASE=0xf4000a00
-CONFIG_SPL_MMC_SUPPORT=y
+CONFIG_SPL_MMC=y
 CONFIG_SPL=y
 CONFIG_ARCH_JZ47XX=y
 CONFIG_SYS_LOAD_ADDR=0x81000000