drm fixes for 5.15-rc1

ttm:
- Fix ttm_bo_move_memcpy() when ttm_resource is subclassed.
- Fix ttm deadlock if target BO isn't idle
- ttm build fix
- ttm docs fix

dma-buf:
- config option fixes

fbdev:
- limit resolutions to avoid int overflow

i915:
- stddef change.

amdgpu:
- Misc cleanups, typo fixes
- EEPROM fix
- Add some new PCI IDs
- Scatter/Gather display support for Yellow Carp
- PCIe DPM fix for RKL platforms
- RAS fix

amdkfd:
- SVM fix

vc4:
- static function fix

mgag200:
- fix uninit var

panfrost:
- lock_region fixes

 - Make some dma-buf config options depend on DMA_SHARED_BUFFER.
    - Handle multiplication overflow of fbdev xres/yres in the core.
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