Merge tag 'drm-psr-fixes-for-v4.8' of git://people.freedesktop.org/~airlied/linux

Merge tag 'drm-psr-fixes-for-v4.8' of git://people.freedesktop.org/~airlied/linux

Pull i915 drm fixes from Dave Airlie:
 "These are the two fixes from Ville for the bug you are seeing on your
  HSW laptop.

  They pretty much disable PSR in some cases where the panel reports a
  setup time that would cause issues, like you seem to have"

* tag 'drm-psr-fixes-for-v4.8' of git://people.freedesktop.org/~airlied/linux:
  drm/i915: Check PSR setup time vs. vblank length
  drm/dp: Add drm_dp_psr_setup_time()