Adds the ability to force dual panel at any dpi (2/3)

This allows tablet mode with single panel and also
allows regular phoneUI with dual panel .
This will only affect apps with dependencies to
framework-res.apk , in other words gapps email.apk etc are not affected.

Change-Id: Ib1aa943eb4f1eb0f6ca4a239d487e10526ac33eb
power: Add CPU boosting interface

 * Boosts CPU using Power HAL for the given duration.
 * Duration is given in microseconds.
 * Power HAL must implement POWER_HINT_CPU_BOOST.

Change-Id: Ic79baf7e3d0f75483c2fe8a242b4c3d93368b68b
Add CPU boosting hooks

 * Boost CPU to max during scrolling
 * Boost CPU to max on activity start/resume
 * Inspired by a patch from CodeAuora.
One more fix for incorrect indices.

Change-Id: I283f2f09cd0a17eefed4a763b08df856bbae76b3