Docs: Add SPDX headers to Makefiles
Signed-off-by: Martin Roth <gaumless@gmail.com>
Change-Id: Id229fb22d20c489db3dd7a59f29e7ac10174fd85
Reviewed-on: https://review.coreboot.org/c/coreboot/+/68957
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>
Reviewed-by: Elyes Haouas <ehaouas@noos.fr>
diff --git a/Documentation/Makefile b/Documentation/Makefile
index b4fe8df..836b6e5 100644
--- a/Documentation/Makefile
+++ b/Documentation/Makefile
@@ -1,3 +1,4 @@
+## SPDX-License-Identifier: GPL-2.0-only
#
# Makefile for coreboot paper.
# hacked together by Stefan Reinauer <stepan@openbios.org>
diff --git a/Documentation/Makefile.sphinx b/Documentation/Makefile.sphinx
index 6930130..289c45b 100644
--- a/Documentation/Makefile.sphinx
+++ b/Documentation/Makefile.sphinx
@@ -1,3 +1,4 @@
+## SPDX-License-Identifier: GPL-2.0-only
# Makefile for Sphinx documentation
#