[Intel-gfx] To the gingerbread house!

[Chris Wilson]

Since those clamoring for the RC6 hole to be plugged are on holiday and
didn't leave a review on the regression fixes, let's push this ahead of
their return. Just a small number of patches left without r-b and then
after almost 12 months of waiting we can close a critical customer
issue.

[PATCH 02/20] drm/i915: Delay queuing hangcheck to wait-request
[PATCH 05/20] drm/i915: Separate GPU hang waitqueue from advance
[PATCH 08/20] drm/i915: Use HWS for seqno tracking everywhere
[PATCH 12/20] drm/i915: Add a delay between interrupt and inspecting
[PATCH 18/20] drm/i915: Move the get/put irq locking into the caller
-Chris