Suspecting a Qualcomm driver bug with integer clamp affecting WebGL2
tests.

Bug: chromium:1217167
Change-Id: I6b323a9de5828b3a11cbe2650d66c7627b90a9f4
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2946111Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>