imx: mx7: psci: add copyright and license

Add copyright and license header.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Cc: Stefano Babic <sbabic@denx.de>

arch/arm/mach-imx/mx7/psci-mx7.c

+/*
+ * Copyright (C) 2015-2016 Freescale Semiconductor, Inc.
+ * Copyright 2017 NXP
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
 #include <asm/io.h>
 #include <asm/psci.h>
 #include <asm/secure.h>

arch/arm/mach-imx/mx7/psci.S

+/*
+ * Copyright (C) 2015-2016 Freescale Semiconductor, Inc.
+ * Copyright 2017 NXP
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
 #include <config.h>
 #include <linux/linkage.h>