msm: kgsl: Reduce hang detection threshold for A610 GPU

Hang detection threshold was increased to prevent false hang
detect issue happening because of a hardware issue. This is
not required on A610 GPU as hardware already has the fix.
Reduce the hang detection threshold value for A610 to make
sure recovery happens within reasonable time.

Change-Id: I035e742b3dfca4834413fc7766a46d5d92914a08
Signed-off-by: Deepak Kumar <dkumar@codeaurora.org>