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/highbank.h b/include/configs/highbank.h
index a7d21a7..0d281a3 100644
--- a/include/configs/highbank.h
+++ b/include/configs/highbank.h
@@ -14,7 +14,7 @@
  * Miscellaneous configurable options
  */
 
-#define CONFIG_SYS_SDRAM_BASE		0x00000000
+#define CFG_SYS_SDRAM_BASE		0x00000000
 
 #define CONFIG_EXTRA_ENV_SETTINGS				\
 	"fdt_high=0x20000000\0"					\