gateway: add comments to struct olsr_gw_handler function prototypes
gateway: add comments to struct olsr_gw_handler function prototypes

Signed-off-by: Ferry Huberts <66e11f9f5d965b69497c7e73d5e808f8b13c1218@pelagic.nl>
Reviewed-by: Henning Rogge <34ecd743be348e142ad646b4dab421dc6773ccd9@fkie.fraunhofer.de>

tdz/olsrd,ninuxorg/olsrd,nolith/olsrd,tdz/olsrd,tdz/olsrd,duydb2/olsr,servalproject/olsr,sebkur/olsrd,acinonyx/olsrd,cholin/olsrd,diogomg/olsrd-binary-heap,cholin/olsrd,sebkur/olsrd,cholin/olsrd,duydb2/olsr,diogomg/olsrd-binary-heap,diogomg/olsrd,duydb2/olsr,diogomg/olsrd,duydb2/olsr,ninuxorg/olsrd,sebkur/olsrd,acinonyx/olsrd,zioproto/olsrd,sebkur/olsrd,acinonyx/olsrd,cholin/olsrd,diogomg/olsrd,duydb2/olsr,servalproject/olsr,duydb2/olsr,tdz/olsrd,tdz/olsrd,ninuxorg/olsrd,diogomg/olsrd,zioproto/olsrd,servalproject/olsr,cholin/olsrd,nolith/olsrd,zioproto/olsrd,diogomg/olsrd-binary-heap,nolith/olsrd,diogomg/olsrd-binary-heap,diogomg/olsrd-binary-heap,nolith/olsrd,ninuxorg/olsrd,duydb2/olsr,nolith/olsrd,duydb2/olsr,diogomg/olsrd,diogomg/olsrd-binary-heap,servalproject/olsr,servalproject/olsr,diogomg/olsrd,sebkur/olsrd,zioproto/olsrd,diogomg/olsrd,sebkur/olsrd,ninuxorg/olsrd,servalproject/olsr,zioproto/olsrd,diogomg/olsrd-binary-heap,acinonyx/olsrd,acinonyx/olsrd