linux-next: Signed-off-by missing for commit in the omap tree

[Stephen Rothwell]

Hi Tony,

Commit

  57af8b4f7b46 ("Revert "ARM: omap2plus: Run make savedefconfig again to save some space"")

is missing a Signed-off-by from its author or committer.

Also, it is nice to put some reasoning in the commit message for a revert
so future you knows why you did it.

-- 
Cheers,
Stephen Rothwell