regulator: tps80031: Switch to SPDX identifier

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

drivers/regulator/tps80031-regulator.c

-/*
- * tps80031-regulator.c -- TI TPS80031 regulator driver.
- *
- * Regulator driver for TI TPS80031/TPS80032 Fully Integrated Power
- * Management with Power Path and Battery Charger.
- *
- * Copyright (c) 2012, NVIDIA Corporation.
- *
- * Author: Laxman Dewangan <ldewangan@nvidia.com>
- *
- * 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.
- *
- * 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.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- * 02111-1307, USA
- */
+// SPDX-License-Identifier: GPL-2.0
+//
+// tps80031-regulator.c -- TI TPS80031 regulator driver.
+//
+// Regulator driver for TI TPS80031/TPS80032 Fully Integrated Power
+// Management with Power Path and Battery Charger.
+//
+// Copyright (c) 2012, NVIDIA Corporation.
+//
+// Author: Laxman Dewangan <ldewangan@nvidia.com>
 
 #include <linux/delay.h>
 #include <linux/err.h>