[XEN PATCH for-4.17 3/4] xen: Add licence header to device_tree_defs.h

[Anthony PERARD <anthony.perard@citrix.com>]

This header have been created by moving code from other part of the
project and miss a licence header. The original source code was some
version of GPL or LGPL but we intend to have the public header to be
MIT so they can be included easily in other projects.

Part of device_tree_defs.h were moved from libxl_arm.c which is
LGPL-2.1-only. And part were moved from device_tree.h that is
GPL-2.0-only.

Part of the original code were added by Julien Grall @ Citrix with a
Linaro "hat" in commits c3ba52a84dd8 and 405c167f0ec9 and
886f34045bf0. The other part were added by Ian Campbell @ Citrix, with
commit 0c64527e7fc9.

Resolves: xen-project/xen#35
Fixes: 1c898a9fec7e ("xen/arm: move a few DT related defines to public/device_tree_defs.h")
Reported-by: Andrew Cooper <Andrew.Cooper3@citrix.com>
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
---

Notes:
    Julian was working @citrix until 2015.

 xen/include/public/device_tree_defs.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/xen/include/public/device_tree_defs.h b/xen/include/public/device_tree_defs.h
index 228daafe81..9e80d0499d 100644
--- a/xen/include/public/device_tree_defs.h
+++ b/xen/include/public/device_tree_defs.h
@@ -1,3 +1,9 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright (c) 2013 Linaro Limited
+ * Copyright (c) 2015 Citrix Systems, Inc
+ */
+
 #ifndef __XEN_DEVICE_TREE_DEFS_H__
 #define __XEN_DEVICE_TREE_DEFS_H__
 
-- 
Anthony PERARD