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/px30_common.h b/include/configs/px30_common.h
index 8b151ef..9937615 100644
--- a/include/configs/px30_common.h
+++ b/include/configs/px30_common.h
@@ -14,7 +14,7 @@
 #define GICD_BASE			0xff131000
 #define GICC_BASE			0xff132000
 
-#define CONFIG_SYS_SDRAM_BASE		0
+#define CFG_SYS_SDRAM_BASE		0
 #define SDRAM_MAX_SIZE			0xff000000
 #define SDRAM_BANK_SIZE			(2UL << 30)