virgl: Add vp9 picture desc

Define vp9 picture and slice parameters.

Signed-off-by: Boyuan Zhang <boyuan.zhang@amd.com>
Reviewed-by: Leo Liu <leo.liu@amd.com>
Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com>
Reviewed-by: Feng Jiang <jiangfeng@kylinos.cn>
Signed-off-by: Huang Rui <ray.huang@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/22108>
1 file changed