regulator: pv880x0: Switch to SPDX identifier

Convert Powerventure Semiconductor PV88060/PV88080/PV88090 regulator
drivers to SPDX identifier.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

drivers/regulator/pv88060-regulator.h

@@ -1,16 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * pv88060-regulator.h - Regulator definitions for PV88060
  * Copyright (C) 2015 Powerventure Semiconductor Ltd.
- *
- * 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 __PV88060_REGISTERS_H__