Reimplement device hardware wake keys support

Author: LuK1337 <priv.luk@gmail.com>
Date:   Mon Jun 4 10:05:37 2018 +0200

    PhoneWindowManager: Improve home button wake haptic feedback handling

    * This fixes an issue where haptic feedback is used
      when screen is off and home button wake is disabled.

    Change-Id: I7ac4c00598cedf7f174dc99629f55dc7b74b0d2a

Author: Gabriele M <moto.falcon.git@gmail.com>
Date:   Mon Sep 26 00:43:08 2016 +0200

    Fix volume keys wakeup status handling

    The same status flag is used for the three different volume keys,
    however nothing prevents users from pressing multiple keys at the
    same time. This allows to set the status flag with one volume key
    and clear it with the other volume key.

    Use one flag per key so that we never end up in an inconsistent
    state. This fixes the seldom power button issues that happen when
    the "volume wake" feature is enabled.

    Change-Id: I08f5f9ff696bef3dd840cff97d570e44ebe03e4e

Author: Martin Brabham <optedoblivion@cyngn.com>
Date:   Wed Dec 3 11:48:28 2014 -0800

    Android Policy: handle volume key event as wake key when preference is set

    Change-Id: If9a61cd65553bf00f0efda1a75b1ab75b9129090

Author: willl03 <wgangers@gmail.com>
Date:   Mon Dec 8 11:13:28 2014 -0500

    Only go HOME if screen is fully awake

    Avoid going home when hardware home button is used to wake the device on an insecure keyguard

    Change-Id: I5d5d8c4fff76967c29e70251f7b165205005ba11

Author: Matt Garnes <matt@cyngn.com>
Date:   Tue Mar 31 14:39:38 2015 -0700

    If a wake key is disabled by the user, do not wake from doze.

    Currently, any wake key will wake the device from a doze, even if that
    key has not been enabled as a wake key in Settings.

    If the device is 'dreaming' in the Doze state, check if the user has
    explicitly disabled the wake key (or never enabled the setting in the
    first place) before waking the device.

    Change-Id: I7397087c143161e8e1ddb84d0e23f6027fea0aac

Author: Michael Bestas <mikeioannina@gmail.com>
Date:   Thu Dec 18 04:26:38 2014 +0200

    Cleanup button wake settings (2/2)

    Change-Id: Ie37136cbd57c4c334321abbfa4543727e940bc43

    Keep quiet when volume keys are used to wake up device

    - Userspace will make a 'beep' with it receives a key up, so
      consume that event as well.
    - Removed wake key check in music control code as it will already
      be disabled here.

    Change-Id: I93839acd39aec8a2ee40291f833a31f6b048c9f8

    Wake Keys: enforce the wake keys overlay

    * Keys disabled as wake keys by the overlay were
      still being allowed to wake the device. This change
      enforces the hardwareWakeKeys settings.

    Change-Id: Ifde0491b2de64a7f61a101cf22f5589cb5e841e2

    Allow disabling Search/Recents button wake (2/2)

    Change-Id: I6a2ac064efc4fe85413bf0b935c28aa7bde5d672

Author: Danny Baumann <dannybaumann@web.de>
Date:   Sun Nov 30 23:04:37 2014 -0600

    fw/base: allow home button to wake device [1/2]

    Change-Id: I2b79561dcfa7e569b2e24bbabfffb11517d4d313

Change-Id: Ic294515c7200c1260ac514db23ef3778d374d727