ieee802154: add wpan_dev_list

This patch adds a wpan_dev_list list into cfg802154_registered_device
struct. Also adding new wpan_dev into this list while
cfg802154_netdev_notifier_call. This behaviour is mostly grab from
wireless core.c implementation and is needed for preparing nl802154
framework.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
diff --git a/net/ieee802154/core.h b/net/ieee802154/core.h
index 38887cb2..e708d9d 100644
--- a/net/ieee802154/core.h
+++ b/net/ieee802154/core.h
@@ -10,6 +10,17 @@
 	/* wpan_phy index, internal only */
 	int wpan_phy_idx;
 
+	/* also protected by devlist_mtx */
+	int opencount;
+	wait_queue_head_t dev_wait;
+
+	/* protected by RTNL only */
+	int num_running_ifaces;
+
+	/* associated wpan interfaces, protected by rtnl or RCU */
+	struct list_head wpan_dev_list;
+	int devlist_generation, wpan_dev_id;
+
 	/* must be last because of the way we do wpan_phy_priv(),
 	 * and it should at least be aligned to NETDEV_ALIGN
 	 */