linux-next: Fixes tag needs some work in the amdgpu tree

[Stephen Rothwell]

Hi Alex,

Commits

  b208c3a940b9 ("drm/amdkfd: avoid HMM change cause circular lock")
  8a3397a108e5 ("drm/amdgpu: use HMM callback to replace mmu notifier")

are missing a Signed-off-by from their committers.

-- 
Cheers,
Stephen Rothwell

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