msm: kgsl: Increase bus bandwidth to avoid underrun

The GPU is exceeding its bandwidth request at SVS,
increase to avoid underrun.

Change-Id: Ib4cd0cf4a6e96ba235b4222b03c9b7fe16475690
CRs-Fixed: 447123
Signed-off-by: Lucille Sylvester <lsylvest@codeaurora.org>
Signed-off-by: Carter Cooper <ccooper@codeaurora.org>