Revert "msm: kgsl: add Simple GPU governor. Original code and idea from @faux123. Current commit has some custom changes: eg. added the load history buffer to filter spikes and average the GPU scaling."

This reverts commit f87a343768bdf6f89004afe764ec1ab8b5818415.

Conflicts:
	drivers/gpu/msm/kgsl_pwrscale_trustzone.c
Revert "Set simple governor as default"

This reverts commit b331c21daa8146c5b61bece74770bcda199809f3.
KGSL: Add a simple GPU governor for Adreno xxx GPU series

initial coding for a Simple GPU governor based on my own work 2 years ago
from Sensation GB kernel commit: c1ea8f64167270d67915b4d4fb00910b1c0f513f

Signed-off-by: Paul Reioux <reioux@gmail.com>
KGSL: make simple govenor a selectable option, co-exist with ondemand

also removed some hardcoded values

Signed-off-by: Paul Reioux <reioux@gmail.com>
KGSL: simple governor: expose tunables to sysfs interface via module_param

Signed-off-by: Paul Reioux <reioux@gmail.com>
KGSL: Simple Governor: fix minor logic issue

Signed-off-by: Paul Reioux <reioux@gmail.com>
Simple GPU as default
simple gov: change ramp_up_threshold to 5000
Conflicts:
	drivers/gpu/msm/kgsl_pwrscale_trustzone.c

Conflicts:
	drivers/gpu/msm/kgsl_pwrscale_trustzone.c

Conflicts:
	drivers/gpu/msm/kgsl_pwrscale_trustzone.c