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/ethernut5.h b/include/configs/ethernut5.h
index f19e12d..97a8ffb 100644
--- a/include/configs/ethernut5.h
+++ b/include/configs/ethernut5.h
@@ -26,8 +26,8 @@
 #define CONFIG_SYS_INIT_RAM_SIZE	(32 << 10)
 
 /* 128MB SDRAM in 1 bank */
-#define CONFIG_SYS_SDRAM_BASE		0x20000000
-#define CONFIG_SYS_SDRAM_SIZE		(128 << 20)
+#define CFG_SYS_SDRAM_BASE		0x20000000
+#define CFG_SYS_SDRAM_SIZE		(128 << 20)
 
 /* 512kB on-chip NOR flash */
 # define CONFIG_SYS_FLASH_BASE		0x00200000 /* AT91SAM9XE_FLASH_BASE */