AssetRedirectionService: Check for permissions before running dump()

Fix android.security.cts.ServicePermissionsTest failure

Change-Id: I9d629d19f3ff231db477d156c8bf557d4b8ee861
Fix mobile data button in power widget.

Change-Id: Ide0417768350081250af24518b6831d70196ba73
JIRA:CYAN-1189