zcr_stylus_v2: Add pointer_stylus interface am: 022e363d0b am: 8cd348884a am: 704551387c am: df06fd512e am: 801b5ae0aa

Original change: https://android-review.googlesource.com/c/platform/external/wayland-protocols/+/1439432

Change-Id: I60bf9abaff36e482661822fdee509c22ebf881db