gpu: nvgpu: Increase PBDMA timeout

gpu: nvgpu: Increase PBDMA timeout

PBDMA timeout can cause stale data in FIFO. Default value equals 1ms.
Increase it to max.

Bug 1537636

Change-Id: I1c6c6b10abaece3a64b77b9b3ef77ff726ff67cf
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/457047
(cherry picked from commit f516652f567a44e2e1c6313dccd3dc80172a980f)
Reviewed-on: http://git-master/r/457067
(cherry picked from commit f5219cf5888502de3f6cabb2db3e8968b6d20b7c)
Reviewed-on: http://git-master/r/504534
Reviewed-by: Automatic_Commit_Validation_User