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/sama5d3_xplained.h b/include/configs/sama5d3_xplained.h
index 1c9af9b..4b13a10 100644
--- a/include/configs/sama5d3_xplained.h
+++ b/include/configs/sama5d3_xplained.h
@@ -24,8 +24,8 @@
 #define ATMEL_PMC_UHP			(1 <<  6)
 
 /* SDRAM */
-#define CONFIG_SYS_SDRAM_BASE           0x20000000
-#define CONFIG_SYS_SDRAM_SIZE		0x10000000
+#define CFG_SYS_SDRAM_BASE           0x20000000
+#define CFG_SYS_SDRAM_SIZE		0x10000000
 
 /* NAND flash */
 #ifdef CONFIG_CMD_NAND