drivers: base: power: add proper SPDX identifiers on files that did not have them.

There were a few files in the driver core power code that did not have
SPDX identifiers on them, so fix that up.  At the same time, remove the
"free form" text that specified the license of the file, as that is
impossible for any tool to properly parse.

Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/base/power/clock_ops.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * drivers/base/power/clock_ops.c - Generic clock manipulation PM callbacks
  *
  * Copyright (c) 2011 Rafael J. Wysocki <rjw@sisk.pl>, Renesas Electronics Corp.
- *
- * This file is released under the GPLv2.
  */
 
 #include <linux/kernel.h>

drivers/base/power/common.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * drivers/base/power/common.c - Common device power management code.
  *
  * Copyright (C) 2011 Rafael J. Wysocki <rjw@sisk.pl>, Renesas Electronics Corp.
- *
- * This file is released under the GPLv2.
  */
-
 #include <linux/kernel.h>
 #include <linux/device.h>
 #include <linux/export.h>

drivers/base/power/domain.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * drivers/base/power/domain.c - Common code related to device power domains.
  *
  * Copyright (C) 2011 Rafael J. Wysocki <rjw@sisk.pl>, Renesas Electronics Corp.
- *
- * This file is released under the GPLv2.
  */
-
 #define pr_fmt(fmt) "PM: " fmt
 
 #include <linux/delay.h>

drivers/base/power/domain_governor.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * drivers/base/power/domain_governor.c - Governors for device PM domains.
  *
  * Copyright (C) 2011 Rafael J. Wysocki <rjw@sisk.pl>, Renesas Electronics Corp.
- *
- * This file is released under the GPLv2.
  */
-
 #include <linux/kernel.h>
 #include <linux/pm_domain.h>
 #include <linux/pm_qos.h>

drivers/base/power/generic_ops.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * drivers/base/power/generic_ops.c - Generic PM callbacks for subsystems
  *
  * Copyright (c) 2010 Rafael J. Wysocki <rjw@sisk.pl>, Novell Inc.
- *
- * This file is released under the GPLv2.
  */
-
 #include <linux/pm.h>
 #include <linux/pm_runtime.h>
 #include <linux/export.h>

drivers/base/power/main.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * drivers/base/power/main.c - Where the driver meets power management.
  *
  * Copyright (c) 2003 Patrick Mochel
  * Copyright (c) 2003 Open Source Development Lab
  *
- * This file is released under the GPLv2
- *
- *
  * The driver model core calls device_pm_add() when a device is registered.
  * This will initialize the embedded device_pm_info object in the device
  * and add it to the list of power-controlled devices. sysfs entries for

drivers/base/power/qos.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Devices PM QoS constraints management
  *
  * Copyright (C) 2011 Texas Instruments, Inc.
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- *
  * This module exposes the interface to kernel space for specifying
  * per-device PM QoS dependencies. It provides infrastructure for registration
  * of:

drivers/base/power/runtime.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * drivers/base/power/runtime.c - Helper functions for device runtime PM
  *
  * Copyright (c) 2009 Rafael J. Wysocki <rjw@sisk.pl>, Novell Inc.
  * Copyright (C) 2010 Alan Stern <stern@rowland.harvard.edu>
- *
- * This file is released under the GPLv2.
  */
-
 #include <linux/sched/mm.h>
 #include <linux/ktime.h>
 #include <linux/hrtimer.h>

drivers/base/power/sysfs.c

-/*
- * drivers/base/power/sysfs.c - sysfs entries for device PM
- */
-
+// SPDX-License-Identifier: GPL-2.0
+/* sysfs entries for device PM */
 #include <linux/device.h>
 #include <linux/string.h>
 #include <linux/export.h>

drivers/base/power/trace.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * drivers/base/power/trace.c
  *
@@ -6,7 +7,6 @@
  * Trace facility for suspend/resume problems, when none of the
  * devices may be working.
  */
-
 #define pr_fmt(fmt) "PM: " fmt
 
 #include <linux/pm-trace.h>

drivers/base/power/wakeirq.c

-/*
- * wakeirq.c - Device wakeirq helper functions
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed "as is" WITHOUT ANY WARRANTY of any
- * kind, whether express or implied; 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
+/* Device wakeirq helper functions */
 #include <linux/device.h>
 #include <linux/interrupt.h>
 #include <linux/irq.h>

drivers/base/power/wakeup.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * drivers/base/power/wakeup.c - System wakeup events framework
  *
  * Copyright (c) 2010 Rafael J. Wysocki <rjw@sisk.pl>, Novell Inc.
- *
- * This file is released under the GPLv2.
  */
-
 #define pr_fmt(fmt) "PM: " fmt
 
 #include <linux/device.h>