can: af_can: convert block comments to network style comments

This patch converts all block comments to network subsystem style block
comments.

Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

net/can/af_can.h

@@ -1,6 +1,5 @@
 /* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */
-/*
- * Copyright (c) 2002-2007 Volkswagen Group Electronic Research
+/* Copyright (c) 2002-2007 Volkswagen Group Electronic Research
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without