soc/intel: Replace GPLv2 long form headers with SPDX header

Change-Id: I468d2ba85033c41ba53333ebbfd6f4108a36e407
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41130

Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

src/soc/intel/apollolake/include/soc/gpio_apl.h

+/* This file is part of the coreboot project. */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
 /*
  * Definitions for the GPIO subsystem on Apollolake
  *
  * Placed in a separate file since some of these definitions can be used from
  * assembly code
- *
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
  */
 
 #ifndef _SOC_APOLLOLAKE_GPIO_H_

src/soc/intel/apollolake/include/soc/gpio_glk.h

+/* This file is part of the coreboot project. */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
 /*
- *
  * Placed in a separate file since some of these definitions can be used from
  * assembly code
- *
- * This file is part of the coreboot project.
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
  */
 
 #ifndef _SOC_GLK_GPIO_H_

src/soc/intel/denverton_ns/include/soc/romstage.h

 /* This file is part of the coreboot project. */
-/*
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #ifndef _SOC_DENVERTON_NS_ROMSTAGE_H_
 #define _SOC_DENVERTON_NS_ROMSTAGE_H_

src/soc/intel/icelake/me.c

 /* This file is part of the coreboot project. */
-/*
- * Copyright (C) 2020 Google LLC.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
 
 #include <bootstate.h>
 #include <intelblocks/cse.h>

src/soc/intel/tigerlake/me.c

 /* This file is part of the coreboot project. */
-/*
- * Copyright (C) 2020 Google LLC.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0-only */
 
 #include <bootstate.h>
 #include <intelblocks/cse.h>