man: bridge: document new bcast_flood flag for bridge ports

The bridge link options are not alphabetically sorted, so placing
bcast_flood right before mcast_flood for now.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
Reviewed-by: Nikolay Aleksandrov <razor@blackwall.org>
Signed-off-by: David Ahern <dsahern@kernel.org>
1 file changed