Fix for stable:

- Fix DDI translation tables for BDW (Chris).

Critical fix:

- Fix GPU Hang on GVT (Changbin).

Other fixes:

- Fix eviction when GGTT is idle (Chris).
- CNL PLL fixes (Rodrigo).
- Fix pwrite into shmemfs (Chris).
- Mask bits for BXT and CHV L3 Workaround
  WaProgramL3SqcReg1Default (Oscar).