cfg80211_s1g_get_start_freq_khz
op_low_1mhz_khz = cfg80211_s1g_get_start_freq_khz(chandef);
for (freq_khz = cfg80211_s1g_get_start_freq_khz(chandef); \
u32 start_khz = cfg80211_s1g_get_start_freq_khz(chandef);
start_khz = cfg80211_s1g_get_start_freq_khz(chandef);