Add a setting to enable cellular on boot.

b/22804423

Change-Id: Ifcee3a2a8bfbfab366c3f9dcd8926d500851bd32
diff --git a/core/java/android/provider/Settings.java b/core/java/android/provider/Settings.java
index 78be3cd..89de101 100644
--- a/core/java/android/provider/Settings.java
+++ b/core/java/android/provider/Settings.java
@@ -8088,6 +8088,13 @@
          * @hide
          */
         public static final String CONTACT_METADATA_SYNC = "contact_metadata_sync";
+
+        /**
+         * Whether to enable cellular on boot.
+         * The value 1 - enable, 0 - disable
+         * @hide
+         */
+        public static final String ENABLE_CELLULAR_ON_BOOT = "enable_cellular_on_boot";
     }
 
     /**