Send out USER_PRESENT broadcast on screen on if lockscreen is disabled.

This makes sure to turn off the notification LED on screen on when the
lockscreen is disabled by profile or e.g. by lockscreen toggle tile.

Change-Id: I0f6a5f9a021abd2799c22c744ab1180cee027409
Don't consider input restricted when the lockscreen is disabled by an
app.

Fixes the secure lockscreen occasionally appearing when disabling the
lockscreen via tile.

Change-Id: I078584d0235c1cc958f89ce12ddf3cc1117a5687
When DPM is updated while lock screen is inhibited, don't
unconditionally enable lock screen.

Change-Id: Iab2af06eb8e41fbcfc6adfbeb5b42a9bbf446fe9