msm: kgsl: Re-enable performance counters

Commit b80b6c9daf379b3784e68 accidently disabled all performance
counters which caused the fault tolerance to falsely trigger more
often.  Re-enable the performance counters and remove duplicate
code to enable the VBIF registers (they are enabled by the
a3xx_perfcounter_enable function).

CRs-fixed: 581430
Change-Id: Ic0dedbad277e796e6b2e7bd8e938cb8afe03207b
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
2 files changed