global: Move remaining CONFIG_SYS_* to CFG_SYS_*

The rest of the unmigrated CONFIG symbols in the CONFIG_SYS 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/trats2.h b/include/configs/trats2.h
index 9c6433c..cef5636 100644
--- a/include/configs/trats2.h
+++ b/include/configs/trats2.h
@@ -13,7 +13,7 @@
 #include <configs/exynos4-common.h>
 
 #ifndef CONFIG_SYS_L2CACHE_OFF
-#define CONFIG_SYS_PL310_BASE	0x10502000
+#define CFG_SYS_PL310_BASE	0x10502000
 #endif
 
 /* TRATS2 has 4 banks of DRAM */