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

Change-Id: I6fe7ee406c83147a02164b6043c21bf35881df9c
Signed-off-by: Paul Reioux <reioux@gmail.com>