wl_drm has been replaced with
wp_linux_dmabuf for buffer creation purposes back in 2015, so let’s remove server-side support for it.
This series stops advertising any format on this interface, removes support for creating a
wl_drm with an
invalid_format error (since no format is advertised anymore), and stubs or removes code expecting to be able to use it.
The client-side usage of
wl_drm isn’t changed in any way, this is left for a future MR.