RTW89_SC_20_LOWER
primary_chan_idx = RTW89_SC_20_LOWER;
primary_chan_idx = RTW89_SC_20_LOWER + offset * 2;
mask_5m_low = pri_ch == RTW89_SC_20_LOWER;
mask_5m_low = pri_ch == RTW89_SC_20_LOWER;
(pri_ch_idx == RTW89_SC_20_LOWER ||
(pri_ch_idx == RTW89_SC_20_LOWER ||
mask_5m_low = pri_ch == RTW89_SC_20_LOWER;