drm fixes for 5.10-rc6

ast:
- LUT loading regression fix

nouveau:
- relocations regression fix

amdgpu:
- ttm init oops fix
- Runtime pm fix
- SI UVD suspend/resume fix
- HDCP fix for headless cards
- Sienna Cichlid golden register update

i915:
- Fix Perf/OA workaround register corruption (Lionel)
- Correct a comment statement in GVT (Yan)
- Fix GT enable/disable iterrupts, including a race condition that prevented GPU to go idle (Chris)
- Free stale request on destroying the virtual engine (Chris)

exynos:
- config dependency fix

mediatek:
- unused var removal
- horizonal front/back porch formula fix

vc4:
- wifi and hdmi interference fix
- mode rejection fixes
- use after free fix
- cleanup some code
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