Various Makefiles: Add SPDX-License-Identifier tags
After consulting with some of the SPDX team, the conclusion is that
Makefiles are worth adding SPDX-License-Identifier tags too, and most of
ours have one. This adds tags to ones that lack them and converts a few
that had full (or in one case, very partial) license blobs into the
equivalent tag.
Cc: Kate Stewart <kstewart@linuxfoundation.org>
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/doc/DocBook/Makefile b/doc/DocBook/Makefile
index 593237f..9caa512 100644
--- a/doc/DocBook/Makefile
+++ b/doc/DocBook/Makefile
@@ -5,6 +5,9 @@
# to document the SRC - and how to read it.
# To add a new book the only step required is to add the book to the
# list of DOCBOOKS.
+#
+# SPDX-License-Identifier: GPL-2.0
+#
DOCBOOKS := linker_lists.xml stdio.xml