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/at91sam9m10g45ek.h b/include/configs/at91sam9m10g45ek.h
index 3ce264a..08cfee1 100644
--- a/include/configs/at91sam9m10g45ek.h
+++ b/include/configs/at91sam9m10g45ek.h
@@ -15,8 +15,8 @@
 #define CONFIG_SYS_AT91_MAIN_CLOCK      12000000 /* from 12 MHz crystal */
 
 /* SDRAM */
-#define CONFIG_SYS_SDRAM_BASE           0x70000000
-#define CONFIG_SYS_SDRAM_SIZE		0x08000000
+#define CFG_SYS_SDRAM_BASE           0x70000000
+#define CFG_SYS_SDRAM_SIZE		0x08000000
 
 /* NAND flash */
 #ifdef CONFIG_CMD_NAND