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/exynos5250-common.h b/include/configs/exynos5250-common.h
index 8e2f135..cc0cf5e 100644
--- a/include/configs/exynos5250-common.h
+++ b/include/configs/exynos5250-common.h
@@ -9,7 +9,7 @@
 #ifndef __CONFIG_5250_H
 #define __CONFIG_5250_H
 
-#define CONFIG_SYS_SDRAM_BASE		0x40000000
+#define CFG_SYS_SDRAM_BASE		0x40000000
 
 /* DRAM Memory Banks */
 #define SDRAM_BANK_SIZE		(256UL << 20UL)	/* 256 MB */