drivers: wifi: siwx91x: Handling data packets for AP mode

In the raw data send API, the interface was hardcoded
for client mode. Now, we determine the opermode and
pass the appropriate interface to the raw data API
based on the current opermode.

Signed-off-by: Rahul Gurram <rahul.gurram@silabs.com>

Author: ragurram26

drivers/wifi/siwx91x/siwx91x_wifi.c

@@ -1331,6 +1331,7 @@ static int siwx91x_ap_config_params(const struct device *dev, struct wifi_ap_con
 static int siwx91x_send(const struct device *dev, struct net_pkt *pkt)
 {
 	size_t pkt_len = net_pkt_get_len(pkt);
+	sl_wifi_interface_t interface;
 	struct net_buf *buf = NULL;
 	int ret;
 
@@ -1347,8 +1348,9 @@ static int siwx91x_send(const struct device *dev, struct net_pkt *pkt)
 		return -ENOBUFS;
 	}
 	net_buf_add(buf, pkt_len);
-
-	ret = sl_wifi_send_raw_data_frame(SL_WIFI_CLIENT_INTERFACE, buf->data, pkt_len);
+	interface = sl_wifi_get_default_interface();
+	ret = sl_wifi_send_raw_data_frame(FIELD_GET(SIWX91X_INTERFACE_MASK, interface),
+					  buf->data, pkt_len);
 	if (ret) {
 		net_buf_unref(buf);
 		return -EIO;