Add support for XBGR2101010 and ABGR2101010 formats.
Signed-off-by: Daniel Stone <daniels@collabora.com> Reviewed-by: Mario Kleiner <mario.kleiner.de@gmail.com> Tested-by: Mario Kleiner <mario.kleiner.de@gmail.com> Tested-by: Ilia Mirkin <imirkin@alum.mit.edu> Reviewed-by: Eric Engestrom <eric.engestrom@intel.com>