treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 352

Based on 1 normalized pattern(s):

this program is free software you can distribute it and or modify it
under the terms of the gnu general public license version 2 as
published by the free software foundation

extracted by the scancode license scanner the SPDX license identifier

GPL-2.0-only

has been chosen to replace the boilerplate/reference in 2 file(s).

Signed-off-by: Thomas Gleixner <[e-mail]>
Reviewed-by: Armijn Hemel <[e-mail]>
Reviewed-by: Allison Randal <[e-mail]>
Cc: [e-mail]
Link: https://lkml.kernel.org/r/[e-mail]
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

arch/mips/pci/ops-loongson2.c

···
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright (C) 1999, 2000, 2004  MIPS Technologies, Inc.
  *	All rights reserved.
···
  *
  * Copyright (C) 2009 Lemote Inc.
  * Author: Wu Zhangjin <[e-mail]>
- *
- *  This program is free software; you can distribute it and/or modify it
- *  under the terms of the GNU General Public License (Version 2) as
- *  published by the Free Software Foundation.
  */
 #include <linux/types.h>
 #include <linux/pci.h>

drivers/spi/spi-lantiq-ssc.c

···
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright (C) 2011-2015 Daniel Schwierzeck <[e-mail]>
  * Copyright (C) 2016 Hauke Mehrtens <[e-mail]>
- *
- * This program is free software; you can distribute it and/or modify it
- * under the terms of the GNU General Public License (Version 2) as
- * published by the Free Software Foundation.
  */
 
 #include <linux/kernel.h>