Make CHANGE_COMPONENT_ENABLED_STATE a signatureOrSystem perm.

Change-Id: I53a6671d5478e7dbca44b17d90f1edfa8e3420bc

Author: Dianne Hackborn

core/res/AndroidManifest.xml

@@ -1077,7 +1077,7 @@
     <permission android:name="android.permission.CHANGE_COMPONENT_ENABLED_STATE"
         android:label="@string/permlab_changeComponentState"
         android:description="@string/permdesc_changeComponentState"
-        android:protectionLevel="signature" />
+        android:protectionLevel="signatureOrSystem" />
 
     <!-- Allows an application to use SurfaceFlinger's low level features -->
     <permission android:name="android.permission.ACCESS_SURFACE_FLINGER"