Revert "msm: kgsl: updates for kgsl_pwctrl.c"

This reverts commit 44884e1635152f1ad7ad12b088c8d7b6dbc4ce6c.
Revert "msm: kgsl: use simple_ondemand devfreq governor for 3D"

This reverts commit 5807162233a70c6ec88850a57e21a49fb324eed0.
Revert "msm: kgsl: convert pwrscale framework to use devfreq"
Linux 3.4.88