PHY_TXC_ANT_SHIFT
wlc->stf->phytxant = core_mask << PHY_TXC_ANT_SHIFT;
wlc->stf->txchain << PHY_TXC_ANT_SHIFT;
phytxant = wlc->stf->txchain << PHY_TXC_ANT_SHIFT;
phytxant = wlc->stf->txchain << PHY_TXC_ANT_SHIFT;