Check all supported CODECs for hardware-acceleration
The v4l2codecs plugin supports a bunch of CODECs, add them all. At the time of writing this, HEVC acceleration is a work-in-progress and not merged.
However, the plugin is in good shape, so it will be merged as 'v4l2slh265dec' as some point, so it makes sense to track it.
See: https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1079
Tested on RK3399 Rockpi4 board, on Fedora Rawhide running Weston compositor.