Merge tag 'drm-fixes-2018-10-12-1' of git://anongit.freedesktop.org/drm/drm

Dave writes:
  "drm fixes for 4.19-rc8

   single nouveau runtime reference and mst change"

* tag 'drm-fixes-2018-10-12-1' of git://anongit.freedesktop.org/drm/drm:
  drm/nouveau/drm/nouveau: Grab runtime PM ref in nv50_mstc_detect()