drivers: ieee802154: remove ieee802154_radio_handle_ack() stub

When using the IEEE802154 radio interface in CONFIG_IEEE802154_RAW_MODE,
there is no way to handle ack frames because of the dummy implementation
of ieee802154_radio_handle_ack() in the ieee802154_radio header file.
Removed the dummy implementation from the header so you can/need to
implement it in the application.

samples: added implementation of ieee802154_radio_handle_ack() to
         wpan_serial and wpanusb sample

Signed-off-by: Gerhard Jörges <joerges@metratec.com>

include/net/ieee802154_radio.h

@@ -394,17 +394,8 @@ static inline bool ieee802154_is_ar_flag_set(struct net_buf *frag)
  *
  * @return NET_OK if it was handled, NET_CONTINUE otherwise
  */
-#ifndef CONFIG_IEEE802154_RAW_MODE
 extern enum net_verdict ieee802154_radio_handle_ack(struct net_if *iface,
 						    struct net_pkt *pkt);
-#else /* CONFIG_IEEE802154_RAW_MODE */
-
-static inline enum net_verdict ieee802154_radio_handle_ack(struct net_if *iface,
-							   struct net_pkt *pkt)
-{
-	return NET_CONTINUE;
-}
-#endif /* CONFIG_IEEE802154_RAW_MODE */
 
 /**
  * @brief Initialize L2 stack for a given interface

samples/net/wpan_serial/src/main.c

@@ -520,6 +520,11 @@ int net_recv_data(struct net_if *iface, struct net_pkt *pkt)
 	return 0;
 }
 
+enum net_verdict ieee802154_radio_handle_ack(struct net_if *iface, struct net_pkt *pkt)
+{
+	return NET_CONTINUE;
+}
+
 void main(void)
 {
 	const struct device *dev;

samples/net/wpanusb/src/wpanusb.c

@@ -409,6 +409,11 @@ out:
 	return ret;
 }
 
+enum net_verdict ieee802154_radio_handle_ack(struct net_if *iface, struct net_pkt *pkt)
+{
+	return NET_CONTINUE;
+}
+
 void main(void)
 {
 	int ret;