[TIPC] Minor changes to #includes

Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
diff --git a/net/tipc/port.h b/net/tipc/port.h
index e829a99..f4a8c2b 100644
--- a/net/tipc/port.h
+++ b/net/tipc/port.h
@@ -37,7 +37,7 @@
 #ifndef _TIPC_PORT_H
 #define _TIPC_PORT_H
 
-#include <net/tipc/tipc_port.h>
+#include "core.h"
 #include "ref.h"
 #include "net.h"
 #include "msg.h"