add one more test suite category for skqp

Change-Id: I3d49bfab23870bb8f96b800d5ecec8730a0b41a0
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/516377
Reviewed-by: Derek Sollenberger <djsollen@google.com>
Commit-Queue: Nathaniel Nifong <nifong@google.com>
1 file changed