mm/hmm: clean up some coding style and comments

There are no functional changes, just some coding style clean ups and
minor comment changes.

Cc: John Hubbard <[email protected]>
Cc: Ira Weiny <[email protected]>
Cc: Dan Williams <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: Balbir Singh <[email protected]>
Cc: Dan Carpenter <[email protected]>
Cc: Matthew Wilcox <[email protected]>
Cc: Souptick Joarder <[email protected]>
Cc: Andrew Morton <[email protected]>
Signed-off-by: Ralph Campbell <[email protected]>
Reviewed-by: Jérôme Glisse <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]>

0 files changed, 0 insertions, 0 deletions