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/hikey.h b/include/configs/hikey.h
index 18c1e83..775f166 100644
--- a/include/configs/hikey.h
+++ b/include/configs/hikey.h
@@ -24,7 +24,7 @@
 /* 1008 MB (the last 16Mb are secured for TrustZone by ATF*/
 #define PHYS_SDRAM_1_SIZE		0x3EFFFFFF
 
-#define CONFIG_SYS_SDRAM_BASE		PHYS_SDRAM_1
+#define CFG_SYS_SDRAM_BASE		PHYS_SDRAM_1
 
 #define CONFIG_SYS_INIT_RAM_SIZE	0x1000