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>

examples/Makefile

@@ -1,6 +1,4 @@
-#
-# SPDX-License-Identifier:	GPL-2.0+
-#
+# SPDX-License-Identifier: GPL-2.0+
 
 ifndef CONFIG_SANDBOX
 

examples/api/Makefile

@@ -1,8 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0+
 #
 # (C) Copyright 2007 Semihalf
-#
-# SPDX-License-Identifier:	GPL-2.0+
-#
 
 # Provide symbol API_BUILD to signal that the API example is being built.
 KBUILD_CPPFLAGS += -DAPI_BUILD

examples/api/crt0.S

@@ -1,9 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * (C) Copyright 2007 Semihalf
  *
  * Written by: Rafal Jaworowski <raj@semihalf.com>
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #if defined(CONFIG_PPC)

examples/api/demo.c

@@ -1,9 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * (C) Copyright 2007-2008 Semihalf
  *
  * Written by: Rafal Jaworowski <raj@semihalf.com>
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <common.h>

examples/api/glue.c

@@ -1,7 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * (C) Copyright 2007-2008 Semihalf, Rafal Jaworowski <raj@semihalf.com>
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <common.h>

examples/api/glue.h

@@ -1,9 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * (C) Copyright 2007 Semihalf
  *
  * Written by: Rafal Jaworowski <raj@semihalf.com>
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 /*

examples/api/libgenwrap.c

@@ -1,10 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * (C) Copyright 2007 Semihalf
  *
  * Written by: Rafal Jaworowski <raj@semihalf.com>
  *
- * SPDX-License-Identifier:	GPL-2.0+
- *
  * This is is a set of wrappers/stubs that allow to use certain routines from
  * U-Boot's lib in the standalone app. This way way we can re-use
  * existing code e.g. operations on strings and similar.

examples/standalone/Makefile

@@ -1,9 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0+
 #
 # (C) Copyright 2000-2006
 # Wolfgang Denk, DENX Software Engineering, wd@denx.de.
-#
-# SPDX-License-Identifier:	GPL-2.0+
-#
 
 extra-y        := hello_world
 extra-$(CONFIG_SMC91111)           += smc91111_eeprom

examples/standalone/hello_world.c

@@ -1,8 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * (C) Copyright 2000
  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <common.h>

examples/standalone/mips.lds

@@ -1,8 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * (C) Copyright 2003
  * Wolfgang Denk Engineering, <wd@denx.de>
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 /*

examples/standalone/mips64.lds

@@ -1,8 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * (C) Copyright 2003
  * Wolfgang Denk Engineering, <wd@denx.de>
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 /*

examples/standalone/nds32.lds

@@ -1,9 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * Copyright (C) 2011 Andes Technology Corporation
  * Shawn Lin, Andes Technology Corporation <nobuhiro@andestech.com>
  * Macpaul Lin, Andes Technology Corporation <macpaul@andestech.com>
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 OUTPUT_FORMAT("elf32-nds32", "elf32-nds32", "elf32-nds32")

examples/standalone/ppc_longjmp.S

@@ -1,8 +1,7 @@
+/* SPDX-License-Identifier: LGPL-2.1+ */
 /* longjmp for PowerPC.
    Copyright (C) 1995, 1996, 1997, 1999, 2000 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-
- * SPDX-License-Identifier:	LGPL-2.1+
  */
 
 #include <ppc_asm.tmpl>

examples/standalone/ppc_setjmp.S

@@ -1,8 +1,7 @@
+/* SPDX-License-Identifier: LGPL-2.1+ */
 /* setjmp for PowerPC.
    Copyright (C) 1995, 1996, 1997, 1999, 2000 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-
- * SPDX-License-Identifier:	LGPL-2.1+
  */
 
 #include <ppc_asm.tmpl>

examples/standalone/riscv.lds

@@ -1,8 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * Copyright (C) 2017 Andes Technology Corporation
  * Rick Chen, Andes Technology Corporation <rick@andestech.com>
- *
- * SPDX-License-Identifier: GPL-2.0+
  */
 
 OUTPUT_ARCH(riscv)

examples/standalone/sched.c

@@ -1,6 +1,4 @@
-/*
- * SPDX-License-Identifier:	GPL-2.0+
- */
+// SPDX-License-Identifier: GPL-2.0+
 
 #include <common.h>
 #include <exports.h>

examples/standalone/smc91111_eeprom.c

@@ -1,9 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * (C) Copyright 2004
  * Robin Getz rgetz@blacfin.uclinux.org
  *
- * SPDX-License-Identifier:	GPL-2.0+
- *
  * Heavily borrowed from the following peoples GPL'ed software:
  *  - Wolfgang Denk, DENX Software Engineering, wd@denx.de
  *       Das U-Boot

examples/standalone/sparc.lds

@@ -1,8 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * (C) Copyright 2003, Psyent Corporation <www.psyent.com>
  * Scott McNutt <smcnutt@psyent.com>
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */