Add dEQP suppressions for two failing tests. BUG=angleproject:1418 BUG=angleproject:1340 Change-Id: I8930845a2d398440a78b2569daaf655b51a30ee9 Reviewed-on: https://chromium-review.googlesource.com/354261 Reviewed-by: Jamie Madill <jmadill@chromium.org> Commit-Queue: Jamie Madill <jmadill@chromium.org>