[Intel-gfx] i915 next

[Chris Wilson]

This is just the first batch of patches that look ready for testing and
feedback.

1-9: Eric's modesetting refactor. This has met with unanimous approval.
10-14: Ben's rc6 fixes for Ironlake, and Jesse's module parameter for SNB.
15-22: Enabling LLC by default on SNB. There are a couple of new patches in
       there since Eric's posting to switch pwrite and mmap GTT to use the
       cached CPU domains, which may or may not be strictly necessary for
       earlier chipsets.
23: Cache GT fifo count. Short term performance gain for the ddx, but will
    probably be dropped in favour of Ben's GT read/write fixes. Hint, Ben,
    hint.
24-25: Some minor code refactoring
26-30: Pipelined fence fixes.

Feedback welcome thanks,
-Chris