Merge branch 'drm-nouveau-fixes' of git:// into drm-fixes

This covers all known nouveau regressions at the moment, along with a fix
to not steal the console on headless GPUs.

* 'drm-nouveau-fixes' of git://
  drm/nouveau: headless mode by default if pci class != vga display
  drm/nouveau: resurrect headless mode since rework
  drm/nv50/fb: prevent oops on chipsets without compression tags
  drm/nouveau: allow creation of zero-sized mm
  drm/nouveau/i2c: fix typo when checking nvio i2c port validity
  drm/nouveau: silence modesetting spam on pre-gf8 chipsets