drivers: wifi: siwx91x: Disable HT capabilities on channel 14

In the Japan regulatory domain, channel 14 is restricted to
802.11b/g operation and does not support HT (802.11n) capabilities.
Disable HT capabilities when operating on channel 14 in AP mode.

Signed-off-by: Arunmani Alagarsamy <[email protected]>

Author: ArunmaniAlagarsamy2710

drivers/wifi/siwx91x/siwx91x_wifi_ap.c

@@ -230,6 +230,11 @@ int siwx91x_ap_enable(const struct device *dev, struct wifi_connect_req_params *
 		siwx91x_ap_cfg.channel.channel = params->channel;
 	}
 
+	if (params->channel == 14) {
+		/* Disable HT on channel 14 */
+		siwx91x_ap_cfg.is_11n_enabled = 0;
+	}
+
 	ret = sl_wifi_start_ap(SL_WIFI_AP_INTERFACE | SL_WIFI_2_4GHZ_INTERFACE, &siwx91x_ap_cfg);
 	if (ret) {
 		LOG_ERR("Failed to enable AP mode: 0x%x", ret);