This is the "fix igt basic test set issues" edition.

- more PSR fixes from Rodrigo, getting closer
- tons of fifo underrun fixes from Ville
- runtime pm fixes from Imre, Daniel Stone
- fix SDE interrupt handling properly (Jani Nikula)
- hsw/bdw fdi modeset sequence fixes (Ville)
- "don't register bad VGA connectors and fall over" fixes (Ville)
- more fbc fixes from Paulo
- and a grand total of exactly one feature item: Implement dma-buf/fence based
  cross-driver sync in the i915 pageflip path (Alex Goins)