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/sam9x60ek.h b/include/configs/sam9x60ek.h
index 7c5bfdb..22813d4 100644
--- a/include/configs/sam9x60ek.h
+++ b/include/configs/sam9x60ek.h
@@ -23,8 +23,8 @@
  */
 
 /* SDRAM */
-#define CONFIG_SYS_SDRAM_BASE		0x20000000
-#define CONFIG_SYS_SDRAM_SIZE		0x10000000	/* 256 megs */
+#define CFG_SYS_SDRAM_BASE		0x20000000
+#define CFG_SYS_SDRAM_SIZE		0x10000000	/* 256 megs */
 
 /* NAND flash */
 #ifdef CONFIG_CMD_NAND