ixgbe: whitespace/formatting cleanup

This patch cleans up some whitespace items, reorders a couple of functions, and removes some outdated comments.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>