Add basic change for v1453

Change-Id: I9497a61bbc3717f66413794a4e7dee0347c0bc33
diff --git a/target/linux/mmp/base-files/etc/shadow b/target/linux/mmp/base-files/etc/shadow
old mode 100644
new mode 100755
index 3f96672..d05132b
--- a/target/linux/mmp/base-files/etc/shadow
+++ b/target/linux/mmp/base-files/etc/shadow
@@ -1 +1,2 @@
 root:$1$tR1FaG6u$aT1PfA0UAU0tAYhmlogog0:16666:0:99999:7:::
+mbtk:$1$tR1FaG6u$aT1PfA0UAU0tAYhmlogog0:16666:0:99999:7:::
\ No newline at end of file