LockscreenInterface from ToggleLockscreenTile (Part 2 of 2)

The current longpress intent of the lockscreen tile is to open
the security settings activity. However, all lockscreen options
were moved to their own fragment months ago. This fixes the
tile longpress to open the current lockscreen options.

Change-Id: Ibca8403e69886d2c83f5240c4cae9adbb61535be
Merge branch 'cm-11.0' of https://github.com/CyanogenMod/android_frameworks_base into cm-11.0