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/include/configs/pico-imx8mq.h b/include/configs/pico-imx8mq.h
index 5d066dc..3faa334 100644
--- a/include/configs/pico-imx8mq.h
+++ b/include/configs/pico-imx8mq.h
@@ -25,7 +25,7 @@
 #define CONFIG_SPL_LIBCOMMON_SUPPORT
 #define CONFIG_SPL_LIBGENERIC_SUPPORT
 #define CONFIG_SPL_GPIO
-#define CONFIG_SPL_MMC_SUPPORT
+#define CONFIG_SPL_MMC
 #define CONFIG_SPL_BSS_START_ADDR	0x00180000
 #define CONFIG_SPL_BSS_MAX_SIZE		0x2000	/* 8 KB */
 #define CONFIG_SYS_SPL_MALLOC_START	0x42200000