[PATCH v3] drm: Add UAPI for the Asahi driver

[Alyssa Rosenzweig]

> Since this is a deparature from our usual requirement that all pieces
> should be ready before landing anything we had discussion whether this is
> an acceptable one-off exception for special circumstance. Thanks a lot to
> Alyssa for driving this. The very much summarized consensus is that due to
> rust this is a special case, and because the userspace is in upstream mesa
> and lead by people who know what they're doing and have been around for
> years, it should all work out. As a stand-in for that discussion:
> 
> Acked-by: Simona Vetter <simona.vetter at ffwll.ch>
> 
> But Dave&me very much do not want to make this a recurring thing, please
> don't try :-)

Thanks for the ack :)