nxge_hio_intr_add
status = nxge_hio_intr_add(nxgep, VP_BOUND_RX, channel);
if (nxge_hio_intr_add(nxgep, VP_BOUND_TX, channel) != NXGE_OK)
extern nxge_status_t nxge_hio_intr_add(nxge_t *, vpc_type_t, int);
extern nxge_status_t nxge_hio_intr_add(nxge_t *, vpc_type_t, int);