msm: kgsl: Fixup 5xx perfcounter update

Almost all the a5xx perfcounters have to go through a inline GPU command
to be enabled but that little detail got missed in commit cbc00716
("msm: kgsl: Move a5xx perfcounters to target specific code").

Fixes: cbc00716 ("msm: kgsl: Move a5xx perfcounters to target specific code")
Change-Id: Ic0dedbad1ba51382e3d4f900ee39759e1548570e
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>