radeonsi/vcn: add vcn 4.0 encode fw interface version

Add major and minor encode FW interface version for VCN 4.0.

Signed-off-by: Boyuan Zhang <boyuan.zhang@amd.com>
Acked-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16328>
1 file changed