Add destination and source stream mode [WHY] In the new version, we add the two alpha fill mode [HOW] Add the two enum first Reviewed-by: Brendan Steve Leder <BrendanSteve.Leder@amd.com> Reviewed-by: Tomson Chang <Tomson.Chang@amd.com> Acked-by: ChuanYu Tseng <ChuanYu.Tseng@amd.com> Signed-off-by: Jude Shih <shenshih@amd.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/35012>