ieee802154: add two nl802154 helpers

Add two nl802154 helpers: one for starting a reply message, one for sending.

Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
diff --git a/net/ieee802154/ieee802154.h b/net/ieee802154/ieee802154.h
index 0790eb0..aadec42 100644
--- a/net/ieee802154/ieee802154.h
+++ b/net/ieee802154/ieee802154.h
@@ -38,8 +38,13 @@
 		.dumpit	= _dump,			\
 	}
 
+struct genl_info;
+
 struct sk_buff *ieee802154_nl_create(int flags, u8 req);
 int ieee802154_nl_mcast(struct sk_buff *msg, unsigned int group);
+struct sk_buff *ieee802154_nl_new_reply(struct genl_info *info,
+		int flags, u8 req);
+int ieee802154_nl_reply(struct sk_buff *msg, struct genl_info *info);
 
 extern struct genl_family nl802154_family;
 int nl802154_mac_register(void);