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/MPC837XERDB.h b/include/configs/MPC837XERDB.h
index 0e70b28..d9627e3 100644
--- a/include/configs/MPC837XERDB.h
+++ b/include/configs/MPC837XERDB.h
@@ -59,7 +59,7 @@
 /*
  * DDR Setup
  */
-#define CONFIG_SYS_SDRAM_BASE		0x00000000 /* DDR is system memory */
+#define CFG_SYS_SDRAM_BASE		0x00000000 /* DDR is system memory */
 #define CONFIG_SYS_DDR_SDRAM_CLK_CNTL	0x03000000
 
 #define CONFIG_SYS_DDRCDR_VALUE	(DDRCDR_DHC_EN | DDRCDR_ODT | DDRCDR_Q_DRN)
@@ -69,7 +69,7 @@
 /*
  * Manually set up DDR parameters
  */
-#define CONFIG_SYS_SDRAM_SIZE		0x10000000 /* 256 MiB */
+#define CFG_SYS_SDRAM_SIZE		0x10000000 /* 256 MiB */
 #define CONFIG_SYS_DDR_CS0_BNDS		0x0000000f
 #define CONFIG_SYS_DDR_CS0_CONFIG	(CSCONFIG_EN \
 					| CSCONFIG_ODT_WR_ONLY_CURRENT \