pcie_topo_add_bridge
fn = pcie_topo_add_bridge(mod, pcie, fn, func);
fn = pcie_topo_add_bridge(mod, pcie, fn, func);
fn = pcie_topo_add_bridge(mod, pcie, fn, func);
static tnode_t *pcie_topo_add_bridge(topo_mod_t *, pcie_t *, tnode_t *,