Kconfig: Rename SPL_MD5_SUPPORT to SPL_MD5

Drop the _SUPPORT suffix so we can use CONFIG_IS_ENABLED() with this
option.
Signed-off-by: NSimon Glass <sjg@chromium.org>
Reviewed-by: NAlexandru Gagniuc <mr.nuke.me@gmail.com>
Signed-off-by: NAlexandru Gagniuc <mr.nuke.me@gmail.com>

common/spl/Kconfig

@@ -417,7 +417,7 @@ config SPL_CRC32
 	  for detected accidental image corruption. For secure applications you
 	  should consider SHA1 or SHA256.
 
-config SPL_MD5_SUPPORT
+config SPL_MD5
 	bool "Support MD5"
 	depends on SPL_FIT
 	help

include/image.h

@@ -65,7 +65,7 @@ struct fdt_region;
 #  ifdef CONFIG_SPL_CRC32
 #   define IMAGE_ENABLE_CRC32	1
 #  endif
-#  ifdef CONFIG_SPL_MD5_SUPPORT
+#  ifdef CONFIG_SPL_MD5
 #   define IMAGE_ENABLE_MD5	1
 #  endif
 #  ifdef CONFIG_SPL_FIT_SHA1