With the offset/len functions taking care of all of the alignment mapping
in isolation from the DMA tranasaction, many comments are now unnecessary.
Remove these and tidy up a few constants at the same time.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-id: 1433455177-21243-4-git-send-email-mark.cave-ayland@ilande.co.uk
Signed-off-by: John Snow <jsnow@redhat.com>