global: Migrate CONFIG_EXTRA_ENV_SETTINGS to CFG

Perform a simple rename of CONFIG_EXTRA_ENV_SETTINGS to CFG_EXTRA_ENV_SETTINGS

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/include/configs/mx53loco.h b/include/configs/mx53loco.h
index d0107fc..0ac93d6 100644
--- a/include/configs/mx53loco.h
+++ b/include/configs/mx53loco.h
@@ -27,7 +27,7 @@
 
 /* Command definition */
 
-#define CONFIG_EXTRA_ENV_SETTINGS \
+#define CFG_EXTRA_ENV_SETTINGS \
 	"script=boot.scr\0" \
 	"image=zImage\0" \
 	"fdt_addr=0x71000000\0" \