Metal: Merge changes to mtlPixelFormatTable Bug: angleproject:6789 Change-Id: I9893093fdff1138fc8ae35ac4363201fa1e0b825 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3329206 Reviewed-by: Jonah Ryan-Davis <jonahr@google.com> Reviewed-by: Kenneth Russell <kbr@chromium.org> Commit-Queue: Gregg Tavares <gman@chromium.org>