FROMGIT: drm/virtio: implement blob resources: refactor UUID code somewhat

For upcoming blob resources, userspace can specify that the
resource will be used for cross-device sharing. This is mainly
for exportable blobs that will only shared with the virtgpu
display but not across devices.

Signed-off-by: Gurchetan Singh <gurchetansingh@chromium.org>
Acked-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20200924003214.662-15-gurchetansingh@chromium.org


Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
(cherry picked from commit 1e2554f49e41d3f6509c6a633e5e4dd48d93ffb9
 git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git

 master)

BUG=b:171715474
TEST=compile

Change-Id: Id56cbccce378a0edb1837eb109df5f229358c261
Signed-off-by: Guenter Roeck <groeck@chromium.org>
(cherry picked from commit 348dd01b35deca5b90762df59bfda4bbaea72848)