Merge branch 'drm-fixes-4.5' of git://people.freedesktop.org/~agd5f/linux into drm-fixes

radeon and amdgpu fixes for 4.5. Three regression fixes and
some fixups for the error handling in the vblank regression fixes
from earlier.

* 'drm-fixes-4.5' of git://people.freedesktop.org/~agd5f/linux:
  Revert "drm/radeon/pm: adjust display configuration after powerstate"
  drm/amdgpu/dp: add back special handling for NUTMEG
  drm/radeon/dp: add back special handling for NUTMEG
  drm/radeon: Fix error handling in radeon_flip_work_func.
  drm/amdgpu: Fix error handling in amdgpu_flip_work_func.