ram: rename CONFIG_SPL_RAM_SUPPORT to CONFIG_SPL_RAM

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/ram/Kconfig b/drivers/ram/Kconfig
index 642a2d8..ff09f22 100644
--- a/drivers/ram/Kconfig
+++ b/drivers/ram/Kconfig
@@ -8,7 +8,7 @@
 	  the RAM size can either be statically defined or dynamically
 	  detected.
 
-config SPL_RAM_SUPPORT
+config SPL_RAM
 	bool "Enable RAM support in SPL"
 	depends on RAM
 	help