radeonsi/vcn: Add radeon_enc_av1_picture_type

Reviewed-by: David (Ming Qiang) Wu <David.Wu3@amd.com>
Reviewed-by: Ruijing Dong <ruijing.dong@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/33845>
5 files changed