msm: kgsl: Trigger recovery on gmu fenced write failure

In preemption trigger sequence if any of the gmu fenced
register fails mark it as gmu fault. So that recovery can
triggered on fenced write failure.

Change-Id: Ic3566bcae717d1a90fa8b3da1b644ca6470f488f
Signed-off-by: Hareesh Gundu <hareeshg@codeaurora.org>