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/corvus.h b/include/configs/corvus.h
index 9d44e67..c7a3e47 100644
--- a/include/configs/corvus.h
+++ b/include/configs/corvus.h
@@ -32,8 +32,8 @@
 #define CONFIG_USART_ID			ATMEL_ID_SYS
 
 /* SDRAM */
-#define CONFIG_SYS_SDRAM_BASE           ATMEL_BASE_CS6
-#define CONFIG_SYS_SDRAM_SIZE		0x08000000
+#define CFG_SYS_SDRAM_BASE           ATMEL_BASE_CS6
+#define CFG_SYS_SDRAM_SIZE		0x08000000
 
 /* NAND flash */
 #ifdef CONFIG_CMD_NAND