firmware-utils: replace GPL 2.0+ boilerplate/reference with SPDX

This uses "GPL-2.0-or-later" header for files identified using scancode
license scanner with 100% score as GPL 2.0 or later.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>

1 files changed, 1 insertions, 13 deletions

diff --git a/tools/firmware-utils/src/sign_dlink_ru.c b/tools/firmware-utils/src/sign_dlink_ru.c
index 9c02ed50af..50f2e67bf4 100644
--- a/tools/firmware-utils/src/sign_dlink_ru.c
+++ b/tools/firmware-utils/src/sign_dlink_ru.c
@@ -1,21 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * This program is designed to sign firmware images so they are accepted
  * by D-Link DIR-882 R1 WebUIs.
  *
  * Copyright (C) 2020 Andrew Pikler
- * 
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- * 
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- * 
- * You should have received a copy of the GNU General Public License
- * along with this program; If not, see <http://www.gnu.org/licenses/>.
  */
 
 #include <stdlib.h>