qv_ic_setvec
qv_ic_setvec(ua, QV_IC, QV_SYNC_VEC, uh->uh_lastiv - 4);
qv_ic_setvec(ua, offs, i, 0);
void qv_ic_setvec(struct uba_attach_args *, bus_size_t, int, int);
qv_ic_setvec(ua, QVA_QVIC, QV_DUART_VEC, ua->ua_cvec);