UPSTREAM: drm/virtio: log error responses

If we got an error response code from the host, print it to the log.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20181219122708.4586-2-kraxel@redhat.com


(cherry picked from commit 3630c2a24f75e3ac58366bc4745c2c63391bb4f7)
Signed-off-by: Greg Hartman <ghartman@google.com>
BUG: 139386237
Change-Id: I53e3c89cdf874e6cc0ea60ab6a619382d2c6ff23