update perfmon id for t19x in get_perfmon_id(). JIRA GV11B-30 Change-Id: I7c76b49cc47f8de1e6fa9492e2986830dcff901f Signed-off-by: Deepak Goyal <dgoyal@nvidia.com> Reviewed-on: http://git-master/r/1284763 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>