msm: kgsl: Increase the cycle count for fault detection in a6xx

GPU may sometimes falsely report a hang interrupt in case of
long running payloads.Increase the number of cycles for fault
detection to avoid false interrupts from the GPU.

Change-Id: Idebc475021c0f69fcad40d71ed82597359a2bcfb
Signed-off-by: Urvashi Agrawal <urvaagra@codeaurora.org>