media: adv748x: convert to SPDX identifiers

As original license mentioned, it is GPL-2.0+ in SPDX.
Then, MODULE_LICENSE() should be "GPL" instead of "GPL v2".
See ${LINUX}/include/linux/module.h

	"GPL"		[GNU Public License v2 or later]
	"GPL v2"	[GNU Public License v2]
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

drivers/media/i2c/adv748x/adv748x-afe.c

+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Driver for Analog Devices ADV748X 8 channel analog front end (AFE) receiver
  * with standard definition processor (SDP)
  *
  * Copyright (C) 2017 Renesas Electronics Corp.
- *
- * 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.
  */
 
 #include <linux/delay.h>

drivers/media/i2c/adv748x/adv748x-core.c

+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Driver for Analog Devices ADV748X HDMI receiver with AFE
  *
  * Copyright (C) 2017 Renesas Electronics Corp.
  *
- * 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.
- *
  * Authors:
  *	Koji Matsuoka <koji.matsuoka.xm@renesas.com>
  *	Niklas Söderlund <niklas.soderlund@ragnatech.se>
@@ -755,4 +751,4 @@ module_i2c_driver(adv748x_driver);
 
 MODULE_AUTHOR("Kieran Bingham <kieran.bingham@ideasonboard.com>");
 MODULE_DESCRIPTION("ADV748X video decoder");
-MODULE_LICENSE("GPL v2");
+MODULE_LICENSE("GPL");

drivers/media/i2c/adv748x/adv748x-csi2.c

+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Driver for Analog Devices ADV748X CSI-2 Transmitter
  *
  * Copyright (C) 2017 Renesas Electronics Corp.
- *
- * 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.
  */
 
 #include <linux/module.h>

drivers/media/i2c/adv748x/adv748x-hdmi.c

+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Driver for Analog Devices ADV748X HDMI receiver and Component Processor (CP)
  *
  * Copyright (C) 2017 Renesas Electronics Corp.
- *
- * 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.
  */
 
 #include <linux/module.h>

drivers/media/i2c/adv748x/adv748x.h

+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * Driver for Analog Devices ADV748X video decoder and HDMI receiver
  *
  * Copyright (C) 2017 Renesas Electronics Corp.
  *
- * 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.
- *
  * Authors:
  *	Koji Matsuoka <koji.matsuoka.xm@renesas.com>
  *	Niklas Söderlund <niklas.soderlund@ragnatech.se>