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/drivers/ddr/marvell/axp/ddr3_axp.h b/drivers/ddr/marvell/axp/ddr3_axp.h
index a14c766..c40cd76 100644
--- a/drivers/ddr/marvell/axp/ddr3_axp.h
+++ b/drivers/ddr/marvell/axp/ddr3_axp.h
@@ -19,10 +19,10 @@
 #define FAR_END_DIMM_ADDR		0x50
 #define MAX_DIMM_ADDR			0x60
 
-#ifndef CONFIG_SYS_SDRAM_SIZE
+#ifndef CFG_SYS_SDRAM_SIZE
 #define SDRAM_CS_SIZE			0xFFFFFFF
 #else
-#define SDRAM_CS_SIZE			((CONFIG_SYS_SDRAM_SIZE >> 10) - 1)
+#define SDRAM_CS_SIZE			((CFG_SYS_SDRAM_SIZE >> 10) - 1)
 #endif
 #define SDRAM_CS_BASE			0x0
 #define SDRAM_DIMM_SIZE			0x80000000