As per
wayland/wayland-protocols@fb9b2a87

,
the compositor may advertise DRM_FORMAT_MOD_INVALID as a supported
modifier. This patch makes mesa recognize this fact and allow
linux_dmabuf usage with the INVALID modifier in this case.

In case the driver doesn't support modifiers, we can still use
linux-dmabuf protocol instead of the legacy wl_drm interface to create
wl_buffers. This will help compositors to handle these buffers better.

In this commit, the INVALID modifier is allowed to be added to the list
of supported modifiers, and create_wl_buffer will be able to use
linux_dmabuf with an INVALID modifier if the compositor advertised it as
supported.

Signed-off-by: Ivan Molodetskikh <yalterz@gmail.com>
Tested-by: Marge Bot <!2147>
Part-of: <!2147>