[PATCH] bonding: comments and changelog

Bonding source files still have changelogs in the comments.  This, then,
is an update to that changelog.

Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Acked-by: Jay Vosburgh <fubar@us.ibm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>