aosp-push-merge:update destination branch to android-7.0

Change-Id: I8219ccf2ae549dbd6ee626a91f0a1a26c7e90afc
diff --git a/utils/aosp-push-merge.sh b/utils/aosp-push-merge.sh
index eb375cb..ee39ee3 100755
--- a/utils/aosp-push-merge.sh
+++ b/utils/aosp-push-merge.sh
@@ -19,7 +19,7 @@
 
 url="gerrit.omnirom.org"
 port="29418"
-branch="android-6.0"
+branch="android-7.0"
 
 cd ../../../