linux-next: Signed-off-by missing for commits in the rcu tree

[Stephen Rothwell]

Hi all,
Commits

  b2998782ded4 ("Documentation/litmus-tests: Clarify about the RCU 
pre-initialization test")
  663f9202eb8a ("Documentation/litmus-tests: Merge atomic's README into 
top-level one")
  f5eff20366f6 ("tools/memory-model: Fix reference to litmus test in 
recipes.txt")

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

-- 
Cheers,
Stephen Rothwell

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