Actually declare use of new policy in deviceadmin

oops.

Change-Id: I24a8d32bf6068653a59e4f7217d7beb8d68ca0ed

res/xml/device_admin.xml

@@ -4,9 +4,9 @@
      Licensed under the Apache License, Version 2.0 (the "License");
      you may not use this file except in compliance with the License.
      You may obtain a copy of the License at
-  
+
           http://www.apache.org/licenses/LICENSE-2.0
-  
+
      Unless required by applicable law or agreed to in writing, software
      distributed under the License is distributed on an "AS IS" BASIS,
      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
@@ -23,5 +23,6 @@
         <wipe-data />
         <expire-password />
         <encrypted-storage />
+        <disable-camera />
     </uses-policies>
 </device-admin>