Increase DATA_STALL_ALARM_DELAY_IN_MS_DEFAULT to 6 minutes.

Initially set to 3 minutes this raised the standby current
by 12.5% so changing to 6 minutes.

Bug: 5534004
Change-Id: I602f5fe4de35d0db2dbacf0c615c300c57dd2d0d

Author: Wink Saville

telephony/java/com/android/internal/telephony/DataConnectionTracker.java

@@ -211,7 +211,7 @@ public enum Activity {
     protected static final String NULL_IP = "0.0.0.0";
 
     // Default for the data stall alarm
-    protected static final int DATA_STALL_ALARM_DELAY_IN_MS_DEFAULT = 1000 * 60 * 3;
+    protected static final int DATA_STALL_ALARM_DELAY_IN_MS_DEFAULT = 1000 * 60 * 6;
     // If attempt is less than this value we're doing first level recovery
     protected static final int DATA_STALL_NO_RECV_POLL_LIMIT = 1;
     // Tag for tracking stale alarms