hci_attach_pcb
sc->sc_unit = hci_attach_pcb(&bcsp_hci, self, 0);
sc->sc_unit = hci_attach_pcb(&bth5_hci, self, 0);
sc->sc_unit = hci_attach_pcb(&btuart_hci, self, 0);
sc->sc_unit = hci_attach_pcb(&bt3c_hci, self, BTF_POWER_UP_NOOP);
sc->sc_unit = hci_attach_pcb(&bt3c_hci, self, BTF_POWER_UP_NOOP);
sc->sc_unit = hci_attach_pcb(&btbc_hci, self, 0);
sc->sc_unit = hci_attach_pcb(&btbc_hci, sc->sc_dev, 0);
sc->sc_unit = hci_attach_pcb(&sbt_hci, self, 0);
sc->sc_unit = hci_attach_pcb(&ubt_hci, sc->sc_dev, 0);
struct hci_unit *hci_attach_pcb(const struct hci_if *, device_t, uint16_t);