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/tools/patman/README b/tools/patman/README
index 8582ed6..606780e 100644
--- a/tools/patman/README
+++ b/tools/patman/README
@@ -1,7 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0+
 # Copyright (c) 2011 The Chromium OS Authors.
-#
-# SPDX-License-Identifier:	GPL-2.0+
-#
 
 What is this?
 =============
diff --git a/tools/patman/checkpatch.py b/tools/patman/checkpatch.py
index 2915d97..d47ea43 100644
--- a/tools/patman/checkpatch.py
+++ b/tools/patman/checkpatch.py
@@ -1,7 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0+
 # Copyright (c) 2011 The Chromium OS Authors.
 #
-# SPDX-License-Identifier:	GPL-2.0+
-#
 
 import collections
 import command
diff --git a/tools/patman/command.py b/tools/patman/command.py
index bebc495..598bfdc 100644
--- a/tools/patman/command.py
+++ b/tools/patman/command.py
@@ -1,7 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0+
 # Copyright (c) 2011 The Chromium OS Authors.
 #
-# SPDX-License-Identifier:	GPL-2.0+
-#
 
 import os
 import cros_subprocess
diff --git a/tools/patman/commit.py b/tools/patman/commit.py
index 3e0adb8..2bf3a0b 100644
--- a/tools/patman/commit.py
+++ b/tools/patman/commit.py
@@ -1,7 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0+
 # Copyright (c) 2011 The Chromium OS Authors.
 #
-# SPDX-License-Identifier:	GPL-2.0+
-#
 
 import re
 
diff --git a/tools/patman/func_test.py b/tools/patman/func_test.py
index 2c0da84..85372f3 100644
--- a/tools/patman/func_test.py
+++ b/tools/patman/func_test.py
@@ -1,9 +1,8 @@
 # -*- coding: utf-8 -*-
+# SPDX-License-Identifier:	GPL-2.0+
 #
 # Copyright 2017 Google, Inc
 #
-# SPDX-License-Identifier:	GPL-2.0+
-#
 
 import contextlib
 import os
diff --git a/tools/patman/get_maintainer.py b/tools/patman/get_maintainer.py
index 22b0918..0ffb55a 100644
--- a/tools/patman/get_maintainer.py
+++ b/tools/patman/get_maintainer.py
@@ -1,7 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0+
 # Copyright (c) 2012 The Chromium OS Authors.
 #
-# SPDX-License-Identifier:	GPL-2.0+
-#
 
 import command
 import gitutil
diff --git a/tools/patman/gitutil.py b/tools/patman/gitutil.py
index 08be937..64ac0c8 100644
--- a/tools/patman/gitutil.py
+++ b/tools/patman/gitutil.py
@@ -1,7 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0+
 # Copyright (c) 2011 The Chromium OS Authors.
 #
-# SPDX-License-Identifier:	GPL-2.0+
-#
 
 import command
 import re
diff --git a/tools/patman/patchstream.py b/tools/patman/patchstream.py
index 1b9136a..b6455b0 100644
--- a/tools/patman/patchstream.py
+++ b/tools/patman/patchstream.py
@@ -1,7 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0+
 # Copyright (c) 2011 The Chromium OS Authors.
 #
-# SPDX-License-Identifier:	GPL-2.0+
-#
 
 import math
 import os
diff --git a/tools/patman/patman.py b/tools/patman/patman.py
index 7647440..8d2c782 100755
--- a/tools/patman/patman.py
+++ b/tools/patman/patman.py
@@ -1,9 +1,8 @@
 #!/usr/bin/env python2
+# SPDX-License-Identifier: GPL-2.0+
 #
 # Copyright (c) 2011 The Chromium OS Authors.
 #
-# SPDX-License-Identifier:	GPL-2.0+
-#
 
 """See README for more information"""
 
diff --git a/tools/patman/project.py b/tools/patman/project.py
index e05ff11..1d9cfc0 100644
--- a/tools/patman/project.py
+++ b/tools/patman/project.py
@@ -1,7 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0+
 # Copyright (c) 2012 The Chromium OS Authors.
 #
-# SPDX-License-Identifier:	GPL-2.0+
-#
 
 import os.path
 
diff --git a/tools/patman/series.py b/tools/patman/series.py
index 73ee394..d526d4e 100644
--- a/tools/patman/series.py
+++ b/tools/patman/series.py
@@ -1,7 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0+
 # Copyright (c) 2011 The Chromium OS Authors.
 #
-# SPDX-License-Identifier:	GPL-2.0+
-#
 
 from __future__ import print_function
 
diff --git a/tools/patman/settings.py b/tools/patman/settings.py
index 92379b7..94ea5b5 100644
--- a/tools/patman/settings.py
+++ b/tools/patman/settings.py
@@ -1,7 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0+
 # Copyright (c) 2011 The Chromium OS Authors.
 #
-# SPDX-License-Identifier:	GPL-2.0+
-#
 
 from __future__ import print_function
 
diff --git a/tools/patman/setup.py b/tools/patman/setup.py
index e61804f..43fdc00 100644
--- a/tools/patman/setup.py
+++ b/tools/patman/setup.py
@@ -1,6 +1,5 @@
-#
-# SPDX-License-Identifier:      GPL-2.0+
-#
+# SPDX-License-Identifier: GPL-2.0+
+
 from distutils.core import setup
 setup(name='patman',
       version='1.0',
diff --git a/tools/patman/terminal.py b/tools/patman/terminal.py
index 137265f..4ceab18 100644
--- a/tools/patman/terminal.py
+++ b/tools/patman/terminal.py
@@ -1,7 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0+
 # Copyright (c) 2011 The Chromium OS Authors.
 #
-# SPDX-License-Identifier:	GPL-2.0+
-#
 
 """Terminal utilities
 
diff --git a/tools/patman/test.py b/tools/patman/test.py
index 51145e8..343efc9 100644
--- a/tools/patman/test.py
+++ b/tools/patman/test.py
@@ -1,9 +1,8 @@
 # -*- coding: utf-8 -*-
+# SPDX-License-Identifier: GPL-2.0+
 #
 # Copyright (c) 2011 The Chromium OS Authors.
 #
-# SPDX-License-Identifier:	GPL-2.0+
-#
 
 import os
 import tempfile
@@ -149,10 +148,10 @@
 --- /dev/null
 +++ b/common/bootstage.c
 @@ -0,0 +1,37 @@
++/* SPDX-License-Identifier: GPL-2.0+ */
 +/*
 + * Copyright (c) 2011, Google Inc. All rights reserved.
 + *
-+ * SPDX-License-Identifier:	GPL-2.0+
 + */
 +
 +/*
diff --git a/tools/patman/tools.py b/tools/patman/tools.py
index ba24853..700cb45 100644
--- a/tools/patman/tools.py
+++ b/tools/patman/tools.py
@@ -1,8 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0+
 #
 # Copyright (c) 2016 Google, Inc
 #
-# SPDX-License-Identifier:      GPL-2.0+
-#
 
 import os
 import shutil
diff --git a/tools/patman/tout.py b/tools/patman/tout.py
index c5fbd80..4cd49e1 100644
--- a/tools/patman/tout.py
+++ b/tools/patman/tout.py
@@ -1,7 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0+
 # Copyright (c) 2016 Google, Inc
 #
-# SPDX-License-Identifier:            GPL-2.0+
-#
 # Terminal output logging.
 #