Long-press power while display is off for torch

Squash of:

Author: beanstown106 <nbenis106@gmail.com>
Date:   Sun Jan 17 09:14:19 2016 -0500
    policy: Long-press power while display is off for torch
    Long-press the power button while the display is off
    to turn the torchlight on and off.
    Credits:
     - Lion0738: The main hooks here:
       https://github.com/lion0738/android_frameworks_base/commit/9af2b7844a4d973c8b6c542d7937f56a24a7e5f1
     - Atlantis: The logic on where to hook into this for power button only
     - Alex Cruz: Helping and giving me some pointers along the way
    Change-Id: I14365389990eb06daaa127f5db66df45abf6c064
    (cherry picked from commit 604f00ce)

Author: Sam Mortimer <sam@mortimer.me.uk>
Date:   Sat Dec 24 13:22:53 2016 -0800
    [1/3] Torch long press power: add auto-off function
    Change-Id: Icdf50082324f8292859f0df8b271e730b02c84e7

Change-Id: I49222892c8fbc8a63af580c763e8987b225b11d2