rtc: imxdi: convert to SPDX identifier

// SPDX-License-Identifier: GPL-2.0+

/*

 * Copyright 2008-2009 Freescale Semiconductor, Inc. All Rights Reserved.

 * Copyright 2010 Orex Computed Radiography

 */

/*

 * The code contained herein is licensed under the GNU General Public

 * License. You may obtain a copy of the GNU General Public License

 * Version 2 or later at the following locations:

 *

 * http://www.opensource.org/licenses/gpl-license.html

 * http://www.gnu.org/copyleft/gpl.html

 */

/* based on rtc-mc13892.c */

/*

 * This driver uses the 47-bit 32 kHz counter in the Freescale DryIce block

 * to implement a Linux RTC. Times and alarms are truncated to seconds.