BugLink: http://bugs.launchpad.net/bugs/1599109

This commit squashes together the following commits backported from
drm-intel-next-queued so that they apply on top of v4.7:

d1b4eefd drm/i915/gen9: Add WaFbcHighMemBwCorruptionAvoidance
031cd8c8 drm/i195/fbc: Add WaFbcNukeOnHostModify
303d4ea5 drm/i915/gen9: Add WaFbcWakeMemOn
0f78dee6 drm/i915/gen9: Add WaFbcTurnOffFbcWatermark
066d4628 drm/i915/kbl: Add WaClearSlmSpaceAtContextSwitch
71dce58c drm/i915/skl: Extend WaDisableChickenBitTSGBarrierAckForFFSliceCS
590e8ff0 drm/i915/gen9: Add WaEnableChickenDCPR
954337aa drm/i915/kbl: Add WaDisableSbeCacheDispatchPortSharing
4de5d7cc drm/i915/kbl: Add WaDisableGafsUnitClkGating
0b2d0934 drm/i915/kbl: Add WaForGAMHang
44fff99f drm/i915/skl: Add WAC6entrylatency
6fc29133 drm/i915/gen9: Add WaDisableSkipCaching
ad2bdb44 drm/i915: Add WaInsertDummyPushConstP for bxt and kbl
c0b730d5 drm/i915/kbl: Add WaDisableDynamicCreditSharing
8aeb7f62 drm/i915/kbl: Add WaDisableGamClockGating
b033bb6d drm/i915/gen9: Enable must set chicken bits in config0 reg
fe905819 drm/i915/kbl: Add WaDisableLSQCROPERFforOCL
17e0adf0 drm/i915/edp: Add WaKVMNotificationOnConfigChange:bdw
9498dba7 drm/i915/kbl: Add WaDisableSDEUnitClockGating
8401d42f drm/i915/kbl: Add WaDisableFenceDestinationToSLM for A0
e587f6cb drm/i915/kbl: Add WaEnableGapsTsvCreditFix
bbaefe72 drm/i915: Mimic skl with WaForceEnableNonCoherent
5b0e3659 drm/i915/gen9: Always apply WaForceContextSaveRestoreNonCohe
6e4f10c3 drm/i915/kbl: Add WaSkipStolenMemoryFirstPage for A0
c033a37c drm/i915/kbl: Add REVID macro
e5f81d65 drm/i915/kbl: Init gen9 workarounds
eee8efb0 drm/i915/skl: Add WaDisableGafsUnitClkGating
6bb62855 drm/i915/gen9: Add WaVFEStateAfterPipeControlwithMediaStateClear
Signed-off-by: Timo Aaltonen <timo.aaltonen@canonical.com>
Acked-by: Tim Gardner <tim.gardner@canonical.com>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>