drm fixes for 5.4-rc4

dma-resv:
- shared fences for lima/panfrost

ttm:
- prefault regression fix
- lifetime fix

panfrost:
- stopped job timeout fix
- missing register values

amdgpu:
- smu7 powerplay fix
- bail earlier for cik/si detection
- navi SDMA fix

radeon:
- revert a ppc64 shutdown fix that broke x86

i915:
- VBT information handling fix
- Circular locking fix
- preemption vs resubmission virtual requests fix
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