Revert "msm: kgsl: Make use of performance counter for A2xx."

This reverts commit 9d324f776e7bb5ed948dec5b955f165c4d29352b.
Revert "msm: kgsl: Avoid an array overrun in the perfcounter API"

This reverts commit bce8976456c0897c09bc0e15085353c1213ad314.
Revert "msm: kgsl: Only allow two counters for VBIF performance counters"

This reverts commit c749b625a105214d2a8d9c85cd8ac6f4230e0559.
Revert "msm: kgsl: Add support for VBIF and VBIF_PWR performance counters"

This reverts commit 374cb284e66e8310a0a67d6c28d6fed6e6ba0f05.
Revert "msm: kgsl: Add a new API to allow sharing of GPU performance counters"

This reverts commit a00ce47f07f9c658d23965433746f11cc2ae60b2.

Conflicts:

	drivers/gpu/msm/adreno.c
	drivers/gpu/msm/adreno_a3xx.c