Add thing identification on knot_config
diff --git a/src/knot_thing_protocol.c b/src/knot_thing_protocol.c
index 8b87361..9773e3f 100644
--- a/src/knot_thing_protocol.c
+++ b/src/knot_thing_protocol.c
@@ -169,6 +169,8 @@
 		set_nrf24MAC();
 	}
 
+	config.id = config.mac.address.uint64;
+
 	return init_connection();
 }