KGSL: Add a simple GPU governor for Adreno xxx GPU series , thanks to @faux123
KGSL: make simple govenor a selectable option, co-exist with ondemand , thanks to @faux123
KGSL: simple governor: expose tunables to sysfs interface via module_param , thanks to @faux123
KGSL: Simple Governor: fix minor logic issue , thanks to @faux123
Added simple gpu governor in defconfig