fix activedisplayview causing lockscreen navbar layout to stay

sometimes the lockscreen navbar layout would still be visibile after
unlocking the device.  the fix was shutting the screen off and turning it
back on which reset the flags properly

Change-Id: I723a35f1fb6db1cec8b6281470dc174ab8f78838
Merge "fix activedisplayview causing lockscreen navbar layout to stay" into kk44