regulator: ltc3589: Switch to SPDX identifier

/*

 * Linear Technology LTC3589,LTC3589-1 regulator support

 *

 * Copyright (c) 2014 Philipp Zabel <p.zabel@pengutronix.de>, Pengutronix

 *

 * See file CREDITS for list of people who contributed to this

 * project.

 *

 * 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 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

//

// Linear Technology LTC3589,LTC3589-1 regulator support

//

// Copyright (c) 2014 Philipp Zabel <p.zabel@pengutronix.de>, Pengutronix

#include <linux/i2c.h>

#include <linux/init.h>

#include <linux/interrupt.h>