6 GHz: Do not check for HT capability on 6 GHz channels

HT capability check is not required when starting AP on 6 GHz band as
only HE operation mode is allowed in the 6 GHz band.

Signed-off-by: Jouni Malinen <jouni@codeaurora.org>

src/ap/hw_features.c

@@ -670,6 +670,9 @@ int hostapd_check_ht_capab(struct hostapd_iface *iface)
 {
 #ifdef CONFIG_IEEE80211N
 	int ret;
+
+	if (is_6ghz_freq(iface->freq))
+		return 0;
 	if (!iface->conf->ieee80211n)
 		return 0;