drm fixes for 5.11-rc6

nouveau:
- fix svm init conditions
- fix nv50 modesetting regression
- fix cursor plane modifiers
- fix > 64x64 cursor regression

vc4:
- Fix LBM size calculation
- Fix high resolutions for hvs5

i915:
- Fix ICL MG PHY vswing
- Fix subplatform handling
- Fix selftest memleak
- Clear CACHE_MODE prior to clearing residuals
- Always flush the active worker before returning from the wait
- Always try to reserve GGTT address 0x0

amdgpu:
- Fix a fan control regression on some boards
- Fix clang warning
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