IWM_RFH_Q0_FRBDCB_WIDX
iwm_write_prph(sc, IWM_RFH_Q0_FRBDCB_WIDX, 0);
#define IWM_RFH_Q_FRBDCB_WIDX(q) (IWM_RFH_Q0_FRBDCB_WIDX + (q) * 4)