Simple GPU Algorithm: Initial coding for devfreq based Adreno Drivers

This is an open source user configurable simple GPU Control Algorithm used to
replace the closed sourced Qualcomm TrustZone GPU controller

Signed-off-by: Paul Reioux <reioux@gmail.com>
Voltage Control: generic voltage control for DTS based kernels

Signed-off-by: Paul Reioux <reioux@gmail.com>