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/evb_ast2500.h b/include/configs/evb_ast2500.h
index cd6cb06..bec1660 100644
--- a/include/configs/evb_ast2500.h
+++ b/include/configs/evb_ast2500.h
@@ -11,7 +11,7 @@
 
 #include <configs/aspeed-common.h>
 
-#define CONFIG_SYS_UBOOT_BASE		CONFIG_TEXT_BASE
+#define CFG_SYS_UBOOT_BASE		CONFIG_TEXT_BASE
 
 /* Misc */
 #define CONFIG_EXTRA_ENV_SETTINGS \