omni: up backup script to a14

Change-Id: Iec6bd7f51338b57e9d58171548c7a8edb820a2c2
diff --git a/prebuilt/common/bin/backuptool_ab.sh b/prebuilt/common/bin/backuptool_ab.sh
index 4a167e0..5628716 100755
--- a/prebuilt/common/bin/backuptool_ab.sh
+++ b/prebuilt/common/bin/backuptool_ab.sh
@@ -5,7 +5,7 @@
 
 export S=/system
 export C=/postinstall/tmp/backupdir
-export V=13
+export V=14
 
 export ADDOND_VERSION=3