global: Move remaining CONFIG_SYS_SDRAM_* to CFG_SYS_SDRAM_*

The rest of the unmigrated CONFIG symbols in the CONFIG_SYS_SDRAM
namespace do not easily transition to Kconfig. In many cases they likely
should come from the device tree instead. Move these out of CONFIG
namespace and in to CFG namespace.

Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/include/configs/r2dplus.h b/include/configs/r2dplus.h
index 406ee62..f6ee720 100644
--- a/include/configs/r2dplus.h
+++ b/include/configs/r2dplus.h
@@ -6,8 +6,8 @@
 /* SCIF */
 
 /* SDRAM */
-#define CONFIG_SYS_SDRAM_BASE		0x8C000000
-#define CONFIG_SYS_SDRAM_SIZE		0x04000000
+#define CFG_SYS_SDRAM_BASE		0x8C000000
+#define CFG_SYS_SDRAM_SIZE		0x04000000
 
 /* Address of u-boot image in Flash */
 #define CONFIG_SYS_BOOTMAPSZ		(8 * 1024 * 1024)