hostapd: Always allow HE AP with a 20 MHz channel width

Skip the test of HE PHY capability bit "Support for a 40 MHz and 80 MHz
channel width" when starting an AP with a 20 MHz channel on the 5 GHz
band.

Signed-off-by: Cedric Izoard <cedric.izoard@ceva-dsp.com>

src/common/hw_features_common.c

@@ -491,7 +491,10 @@ int hostapd_set_freq_params(struct hostapd_freq_params *data,
 
 	if (data->he_enabled) switch (oper_chwidth) {
 	case CHANWIDTH_USE_HT:
-		if (mode == HOSTAPD_MODE_IEEE80211G && sec_channel_offset) {
+		if (sec_channel_offset == 0)
+			break;
+
+		if (mode == HOSTAPD_MODE_IEEE80211G) {
 			if (!(he_cap->phy_cap[HE_PHYCAP_CHANNEL_WIDTH_SET_IDX] &
 			      HE_PHYCAP_CHANNEL_WIDTH_SET_40MHZ_IN_2G)) {
 				wpa_printf(MSG_ERROR,