drm/imx: Switch to SPDX identifier

Adopt the SPDX license identifier headers to ease license compliance
management.
Signed-off-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>

drivers/gpu/drm/imx/dw_hdmi-imx.c

+// SPDX-License-Identifier: GPL-2.0
 /* Copyright (C) 2011-2013 Freescale Semiconductor, Inc.
  *
  * derived from imx-hdmi.c(renamed to bridge/dw_hdmi.c now)
- *
- * 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.
  */
 #include <linux/module.h>
 #include <linux/platform_device.h>

drivers/gpu/drm/imx/imx-drm-core.c

+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Freescale i.MX drm driver
  *
  * Copyright (C) 2011 Sascha Hauer, Pengutronix
- *
- * 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.
- * 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.
- *
  */
 #include <linux/component.h>
 #include <linux/device.h>

drivers/gpu/drm/imx/imx-ldb.c

+// SPDX-License-Identifier: GPL-2.0+
 /*
  * i.MX drm driver - LVDS display bridge
  *
  * Copyright (C) 2012 Sascha Hauer, Pengutronix
- *
- * 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.
- * 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.
  */
 
 #include <linux/module.h>

drivers/gpu/drm/imx/imx-tve.c

+// SPDX-License-Identifier: GPL-2.0+
 /*
  * i.MX drm driver - Television Encoder (TVEv2)
  *
  * Copyright (C) 2013 Philipp Zabel, Pengutronix
- *
- * 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.
- * 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.
  */
 
 #include <linux/clk.h>

drivers/gpu/drm/imx/ipuv3-crtc.c

+// SPDX-License-Identifier: GPL-2.0+
 /*
  * i.MX IPUv3 Graphics driver
  *
  * Copyright (C) 2011 Sascha Hauer, Pengutronix
- *
- * 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.
- * 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.
  */
 #include <linux/component.h>
 #include <linux/module.h>

drivers/gpu/drm/imx/ipuv3-plane.c

+// SPDX-License-Identifier: GPL-2.0+
 /*
  * i.MX IPUv3 DP Overlay Planes
  *
  * Copyright (C) 2013 Philipp Zabel, Pengutronix
- *
- * 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.
- * 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.
  */
 
 #include <drm/drmP.h>

drivers/gpu/drm/imx/parallel-display.c

+// SPDX-License-Identifier: GPL-2.0+
 /*
  * i.MX drm driver - parallel display implementation
  *
  * Copyright (C) 2012 Sascha Hauer, Pengutronix
- *
- * 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.
- * 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.
  */
 
 #include <linux/component.h>