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/common/spl/spl_xip.c b/common/spl/spl_xip.c
index 1258d85..77c23ba 100644
--- a/common/spl/spl_xip.c
+++ b/common/spl/spl_xip.c
@@ -25,6 +25,6 @@
 	}
 #endif
 	return(spl_parse_image_header(spl_image, bootdev,
-	       (const struct legacy_img_hdr *)CONFIG_SYS_UBOOT_BASE));
+	       (const struct legacy_img_hdr *)CFG_SYS_UBOOT_BASE));
 }
 SPL_LOAD_IMAGE_METHOD("XIP", 0, BOOT_DEVICE_XIP, spl_xip);