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>

drivers/Makefile

@@ -12,7 +12,7 @@ obj-$(CONFIG_$(SPL_TPL_)FIRMWARE) +=firmware/
 obj-$(CONFIG_$(SPL_TPL_)I2C) += i2c/
 obj-$(CONFIG_$(SPL_TPL_)INPUT) += input/
 obj-$(CONFIG_$(SPL_TPL_)LED) += led/
-obj-$(CONFIG_$(SPL_TPL_)MMC_SUPPORT) += mmc/
+obj-$(CONFIG_$(SPL_TPL_)MMC) += mmc/
 obj-y += mtd/
 obj-$(CONFIG_$(SPL_)MULTIPLEXER) += mux/
 obj-$(CONFIG_$(SPL_TPL_)PCH_SUPPORT) += pch/