Updates for cm-12.1

Change-Id: I3eefaadce417ed3802f31bd62ee57a3b18561839
diff --git a/prebuilt/common/bin/backuptool.functions b/prebuilt/common/bin/backuptool.functions
index 10d66a4..0b45247 100644
--- a/prebuilt/common/bin/backuptool.functions
+++ b/prebuilt/common/bin/backuptool.functions
@@ -5,7 +5,7 @@
 
 export C=/tmp/backupdir
 export S=/system
-export V=12
+export V=12.1
 
 backup_file() {
   if [ -e "$1" ]; then