Merge remote branch 'intel/drm-intel-fixes' of ../drm-next into drm-core-next

Merge remote branch 'intel/drm-intel-fixes' of ../drm-next into drm-core-next

* 'intel/drm-intel-fixes' of ../drm-next:
  Revert "drm/i915: Don't save/restore hardware status page address register"
  drm/i915: Avoid unmapping pages from a NULL address space
  drm/i915: Fix use after free within tracepoint
  drm/i915: Restore missing command flush before interrupt on BLT ring
  drm/i915: Disable pagefaults along execbuffer relocation fast path
  drm/i915: Fix computation of pitch for dumb bo creator
  drm/i915: report correct render clock frequencies on SNB
  drm/i915/dp: Correct the order of deletion for ghost eDP devices
  drm/i915: Fix tiling corruption from pipelined fencing
  drm/i915: Re-enable self-refresh
  drm/i915: Prevent racy removal of request from client list
  drm/i915: skip redundant operations whilst enabling pipes and planes
  drm/i915: Remove surplus POSTING_READs before wait_for_vblank