bitbake: bitbake: Add initial pass of SPDX license headers to source code

This adds the SPDX-License-Identifier license headers to the majority of
our source files to make it clearer exactly which license files are under.

The bulk of the files are under GPL v2.0 with one found to be under V2.0
or later, some under MIT and some have dual license. There are some files
which are potentially harder to classify where we've imported upstream code
and those can be handled specifically in later commits.

The COPYING file is replaced with LICENSE.X files which contain the full
license texts.

(Bitbake rev: ff237c33337f4da2ca06c3a2c49699bc26608a6b)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/bitbake/bin/bitbake-layers b/bitbake/bin/bitbake-layers
index d184011ea6..da52990515 100755
--- a/bitbake/bin/bitbake-layers
+++ b/bitbake/bin/bitbake-layers
@@ -7,6 +7,8 @@
 # Copyright (C) 2011 Mentor Graphics Corporation
 # Copyright (C) 2011-2015 Intel Corporation
 #
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # 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.