Revert "Upgrade Adreno drivers from Code Aurora."

This reverts commit 017c561e0273335c28c661420c265f446a2bff01.
Move gpu/msm_adreno220 and video/msm_8x60 back to respective locations
Update kgsl drivers to jb_chocolate.
Impliment Conservative kgsl powerscale policy: still a work-in-progress