There is no requirement for a base DRM format to be supported by libgstvideo
in order to be uploaded to.
The linux-dmabuf-v1 format events are DRM_FORMAT codes and don't need to
be converted before use with `gst_video_dma_drm_fourcc_to_string`.
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/8279>