sbdp_get_memlist
mlist = sbdp_get_memlist(hdp, mp->sbm_cm.sbdev_dip);
bdp->ml = sbdp_get_memlist(hp, (dev_info_t *)NULL);
mlist = sbdp_get_memlist(hp, (dev_info_t *)NULL);
struct memlist *sbdp_get_memlist(sbdp_handle_t *hp, dev_info_t *dip);