Enable mobile data always on.

Test: has been on in fishfood several months.
Bug: 23113288
Change-Id: I73ba432f619d28dab78e2d865d56aa7e7c5a67f9
diff --git a/services/core/java/com/android/server/ConnectivityService.java b/services/core/java/com/android/server/ConnectivityService.java
index 66f5c4d..b3627adc 100644
--- a/services/core/java/com/android/server/ConnectivityService.java
+++ b/services/core/java/com/android/server/ConnectivityService.java
@@ -883,7 +883,7 @@
 
     private void handleMobileDataAlwaysOn() {
         final boolean enable = (Settings.Global.getInt(
-                mContext.getContentResolver(), Settings.Global.MOBILE_DATA_ALWAYS_ON, 0) == 1);
+                mContext.getContentResolver(), Settings.Global.MOBILE_DATA_ALWAYS_ON, 1) == 1);
         final boolean isEnabled = (mNetworkRequests.get(mDefaultMobileDataRequest) != null);
         if (enable == isEnabled) {
             return;  // Nothing to do.