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/board/davinci/da8xxevm/Makefile b/board/davinci/da8xxevm/Makefile
index 93e1f1d..3fac615 100644
--- a/board/davinci/da8xxevm/Makefile
+++ b/board/davinci/da8xxevm/Makefile
@@ -1,11 +1,9 @@
+# SPDX-License-Identifier: GPL-2.0+
 #
 # (C) Copyright 2000, 2001, 2002
 # Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 #
 # Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
-#
-# SPDX-License-Identifier:	GPL-2.0+
-#
 
 obj-$(CONFIG_MACH_DAVINCI_DA830_EVM)	+= da830evm.o
 obj-$(CONFIG_MACH_DAVINCI_DA850_EVM)	+= da850evm.o
diff --git a/board/davinci/da8xxevm/da850evm.c b/board/davinci/da8xxevm/da850evm.c
index 37a0d72..c565ba7 100644
--- a/board/davinci/da8xxevm/da850evm.c
+++ b/board/davinci/da8xxevm/da850evm.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/
  *
@@ -5,8 +6,6 @@
  *
  * Copyright (C) 2009 Nick Thompson, GE Fanuc, Ltd. <nick.thompson@gefanuc.com>
  * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <common.h>
diff --git a/board/davinci/da8xxevm/omapl138_lcdk.c b/board/davinci/da8xxevm/omapl138_lcdk.c
index 5650207..15ffc3b 100644
--- a/board/davinci/da8xxevm/omapl138_lcdk.c
+++ b/board/davinci/da8xxevm/omapl138_lcdk.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
  *
@@ -5,8 +6,6 @@
  *
  * Copyright (C) 2009 Nick Thompson, GE Fanuc, Ltd. <nick.thompson@gefanuc.com>
  * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <common.h>
diff --git a/board/davinci/da8xxevm/u-boot-spl-da850evm.lds b/board/davinci/da8xxevm/u-boot-spl-da850evm.lds
index 85a6be9..f5462f8 100644
--- a/board/davinci/da8xxevm/u-boot-spl-da850evm.lds
+++ b/board/davinci/da8xxevm/u-boot-spl-da850evm.lds
@@ -1,11 +1,10 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * (C) Copyright 2002
  * Gary Jennejohn, DENX Software Engineering, <garyj@denx.de>
  *
  * (C) Copyright 2008
  * Guennadi Liakhovetki, DENX Software Engineering, <lg@denx.de>
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 MEMORY { .sram : ORIGIN = CONFIG_SPL_TEXT_BASE,\
diff --git a/board/davinci/ea20/Makefile b/board/davinci/ea20/Makefile
index a5311c4..2ea42d9 100644
--- a/board/davinci/ea20/Makefile
+++ b/board/davinci/ea20/Makefile
@@ -1,10 +1,8 @@
+# SPDX-License-Identifier: GPL-2.0+
 #
 # (C) Copyright 2000, 2001, 2002
 # Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 #
 # Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
-#
-# SPDX-License-Identifier:	GPL-2.0+
-#
 
 obj-y	+= ea20.o
diff --git a/board/davinci/ea20/ea20.c b/board/davinci/ea20/ea20.c
index 2a187f1..573e0ae 100644
--- a/board/davinci/ea20/ea20.c
+++ b/board/davinci/ea20/ea20.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * (C) Copyright 2010
  * Stefano Babic, DENX Software Engineering, sbabic@denx.de
@@ -10,8 +11,6 @@
  *
  * Copyright (C) 2009 Nick Thompson, GE Fanuc, Ltd. <nick.thompson@gefanuc.com>
  * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <common.h>