8e2ac24482
this breaks the driver!
the uploader always maps its own pointer, so modifying that at any
point just explodes things later
Fixes: d179c5d28e ("zink: implement threaded context")
Reviewed-by: Dave Airlie <airlied@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10787>