Vulkan: Suppress PointCoord test on Android. This started failing with the driver uniform rework: Vulkan: Add driver uniforms for point coords flipping https://chromium-review.googlesource.com/1133584 Suppress until we can investigate. Bug: angleproject:2727 Change-Id: Id1d1fe713ac058a0bb45230ba9e292f012755bcc Reviewed-on: https://chromium-review.googlesource.com/1135729 Reviewed-by: Jamie Madill <jmadill@chromium.org> Commit-Queue: Jamie Madill <jmadill@chromium.org>