This adds an API check and bump recommended base kernel version to 5.20. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1079>
Add v4l2 stateless H265 decoder. Co-authored-by: Nicolas Dufresne <nicolas.dufresne@collabora.com> Co-authored-by: Sebastian Fricke <sebastian.fricke@collabora.com> Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1079>