• Remove the compile time limit for number of links a ng_bridge node can handle. Instead using an array on node private data, use per-hook private data.
• Use NG_NODE_FOREACH_HOOK() to traverse through hooks instead of array.

PR: 240787
Submitted by: Lutz Donnerhacke <lutz donnerhacke.de>
Differential Revision: https://reviews.freebsd.org/D21803