Add ThermalObserver system service to capture thermal state uevents.

Bug: 21445745
Change-Id: I980d60b66ca51942a1fd62502d6cf1f09208fc3a
diff --git a/core/res/AndroidManifest.xml b/core/res/AndroidManifest.xml
index b051de4..0f46983 100644
--- a/core/res/AndroidManifest.xml
+++ b/core/res/AndroidManifest.xml
@@ -65,6 +65,7 @@
     <protected-broadcast android:name="android.intent.action.NEW_OUTGOING_CALL" />
     <protected-broadcast android:name="android.intent.action.REBOOT" />
     <protected-broadcast android:name="android.intent.action.DOCK_EVENT" />
+    <protected-broadcast android:name="android.intent.action.THERMAL_EVENT" />
     <protected-broadcast android:name="android.intent.action.MASTER_CLEAR_NOTIFICATION" />
     <protected-broadcast android:name="android.intent.action.USER_ADDED" />
     <protected-broadcast android:name="android.intent.action.USER_REMOVED" />