[openwrt/openwrt] firmware-utils: trx: replace GPL-2.0-or-later boilerplate with SPDX

[LEDE Commits]

rmilecki pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/0e85dc0e913165c0c215b48da3f5a7ed4e209481

commit 0e85dc0e913165c0c215b48da3f5a7ed4e209481
Author: Rafał Miłecki <rafal at milecki.pl>
AuthorDate: Fri Aug 6 12:59:22 2021 +0200

    firmware-utils: trx: replace GPL-2.0-or-later boilerplate with SPDX
    
    This was missed because scancode license scanner was confused by
    comments about crc32buf().
    
    Signed-off-by: Rafał Miłecki <rafal at milecki.pl>
---
 tools/firmware-utils/src/trx.c | 15 +--------------
 1 file changed, 1 insertion(+), 14 deletions(-)

diff --git a/tools/firmware-utils/src/trx.c b/tools/firmware-utils/src/trx.c
index dc5bb672ae..e09d671f02 100644
--- a/tools/firmware-utils/src/trx.c
+++ b/tools/firmware-utils/src/trx.c
@@ -1,19 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * Copyright (C) 2004  Manuel Novoa III  <mjn3 at codepoet.org>
- *
- * 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, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  */
 
 /* July 29, 2004