LED: Battery Light [1/2]

==Requires==
in device tree's overlay/frameworks/base/core/res/res/values/config.xml:

    <!-- Is the battery LED intrusive? Used to decide if there should be a disable option -->
    <bool name="config_intrusiveBatteryLed">true</bool>

    <!-- Does the battery LED support multiple colors? Used to decide if the user can change the colors -->
    <bool name="config_multiColorBatteryLed">true</bool>

PS6: enable by default
PS7: rmv public.xml additions
PS8: incompatible types getInteger to getBoolean
PS9: Works

Signed-off-by: Andre Saddler <dresadd09691@gmail.com>
Change-Id: Iadaba42c1752e31cc77804e5b0d01788724c35c8
Improve scrolling cache

Scrolling cache helps make short scrolls/flings smooth but will
cause stutter when long flings are made. This patch disables
scrolling cache when long flings are made.

This patch also fixes a related bug where scrolling cache will
not be enabled properly when transitioning from flinging to scrolling.

Patch Set 2: Calculate threshold based on maximum velocity (Sang Tae Park)

Credits: Pawit Pornkitprasan

Change-Id: I1fdbaad92263c9f983a32900e74eba1f0367902b
Signed-off-by: Arham Jamal <arhamjamal@gmail.com>