QuickSettings : Properly restore lockscreen tile state

The keyguard lock relies on device policy manager service to be active,
currently it fails because it tries to request before its up. Fix that
by registering the request in a receiver

Change-Id: I15e0d980ecf21c8316f4a771e93f4b520c556115
Merge remote-tracking branch 'cm/cm-11.0' into cm-11.0