SPDX: Convert all of our single license tags to Linux Kernel style

When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/drivers/video/sunxi/Makefile b/drivers/video/sunxi/Makefile
index fa12d43..147e187 100644
--- a/drivers/video/sunxi/Makefile
+++ b/drivers/video/sunxi/Makefile
@@ -1,9 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0+
 #
 # (C) Copyright 2000-2007
 # Wolfgang Denk, DENX Software Engineering, wd@denx.de.
-#
-# SPDX-License-Identifier:	GPL-2.0+
-#
 
 obj-$(CONFIG_VIDEO_SUNXI) += sunxi_display.o simplefb_common.o lcdc.o tve_common.o ../videomodes.o
 obj-$(CONFIG_VIDEO_DE2) += sunxi_de2.o sunxi_dw_hdmi.o simplefb_common.o lcdc.o ../dw_hdmi.o sunxi_lcd.o
diff --git a/drivers/video/sunxi/lcdc.c b/drivers/video/sunxi/lcdc.c
index 4cb86fb..63c47bf 100644
--- a/drivers/video/sunxi/lcdc.c
+++ b/drivers/video/sunxi/lcdc.c
@@ -1,11 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Timing controller driver for Allwinner SoCs.
  *
  * (C) Copyright 2013-2014 Luc Verhaegen <libv@skynet.be>
  * (C) Copyright 2014-2015 Hans de Goede <hdegoede@redhat.com>
  * (C) Copyright 2017 Jernej Skrabec <jernej.skrabec@siol.net>
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <common.h>
diff --git a/drivers/video/sunxi/simplefb_common.c b/drivers/video/sunxi/simplefb_common.c
index 0cf5f0c..df6501e 100644
--- a/drivers/video/sunxi/simplefb_common.c
+++ b/drivers/video/sunxi/simplefb_common.c
@@ -1,11 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Common code for Allwinner SimpleFB with pipeline.
  *
  * (C) Copyright 2013-2014 Luc Verhaegen <libv@skynet.be>
  * (C) Copyright 2014-2015 Hans de Goede <hdegoede@redhat.com>
  * (C) Copyright 2017 Icenowy Zheng <icenowy@aosc.io>
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <fdtdec.h>
diff --git a/drivers/video/sunxi/simplefb_common.h b/drivers/video/sunxi/simplefb_common.h
index 1a2bfab..f4c5e74 100644
--- a/drivers/video/sunxi/simplefb_common.h
+++ b/drivers/video/sunxi/simplefb_common.h
@@ -1,7 +1,6 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * (C) Copyright 2017 Icenowy Zheng <icenowy@aosc.io>
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #ifndef __SIMPLEFB_COMMON_H
diff --git a/drivers/video/sunxi/sunxi_de2.c b/drivers/video/sunxi/sunxi_de2.c
index 8601873..a2303db 100644
--- a/drivers/video/sunxi/sunxi_de2.c
+++ b/drivers/video/sunxi/sunxi_de2.c
@@ -1,9 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Allwinner DE2 display driver
  *
  * (C) Copyright 2017 Jernej Skrabec <jernej.skrabec@siol.net>
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <common.h>
diff --git a/drivers/video/sunxi/sunxi_display.c b/drivers/video/sunxi/sunxi_display.c
index 4da169f..5c8f88c 100644
--- a/drivers/video/sunxi/sunxi_display.c
+++ b/drivers/video/sunxi/sunxi_display.c
@@ -1,10 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Display driver for Allwinner SoCs.
  *
  * (C) Copyright 2013-2014 Luc Verhaegen <libv@skynet.be>
  * (C) Copyright 2014-2015 Hans de Goede <hdegoede@redhat.com>
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <common.h>
diff --git a/drivers/video/sunxi/sunxi_dw_hdmi.c b/drivers/video/sunxi/sunxi_dw_hdmi.c
index 4f01d1b..c78e33b 100644
--- a/drivers/video/sunxi/sunxi_dw_hdmi.c
+++ b/drivers/video/sunxi/sunxi_dw_hdmi.c
@@ -1,9 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Allwinner DW HDMI bridge
  *
  * (C) Copyright 2017 Jernej Skrabec <jernej.skrabec@siol.net>
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <common.h>
diff --git a/drivers/video/sunxi/sunxi_lcd.c b/drivers/video/sunxi/sunxi_lcd.c
index 2f51aeb..619f589 100644
--- a/drivers/video/sunxi/sunxi_lcd.c
+++ b/drivers/video/sunxi/sunxi_lcd.c
@@ -1,9 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Allwinner LCD driver
  *
  * (C) Copyright 2017 Vasily Khoruzhick <anarsoul@gmail.com>
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <common.h>
diff --git a/drivers/video/sunxi/tve_common.c b/drivers/video/sunxi/tve_common.c
index adea78a..3525137 100644
--- a/drivers/video/sunxi/tve_common.c
+++ b/drivers/video/sunxi/tve_common.c
@@ -1,11 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * TV encoder driver for Allwinner SoCs.
  *
  * (C) Copyright 2013-2014 Luc Verhaegen <libv@skynet.be>
  * (C) Copyright 2014-2015 Hans de Goede <hdegoede@redhat.com>
  * (C) Copyright 2017 Jernej Skrabec <jernej.skrabec@siol.net>
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <common.h>