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/rk3568_common.h b/include/configs/rk3568_common.h
index 15e8152..d43dc25 100644
--- a/include/configs/rk3568_common.h
+++ b/include/configs/rk3568_common.h
@@ -10,7 +10,7 @@
 
 #define CONFIG_IRAM_BASE		0xfdcc0000
 
-#define CONFIG_SYS_SDRAM_BASE		0
+#define CFG_SYS_SDRAM_BASE		0
 #define SDRAM_MAX_SIZE			0xf0000000
 
 #define ENV_MEM_LAYOUT_SETTINGS		\