[openwrt/openwrt] firmware-utils: mkmerakifw-old: replace GPL-2.0-only boilerplate with SPDX

[LEDE Commits]

rmilecki pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/fe54c3a0db72211bd3f4d68ca0ac25b576d46196

commit fe54c3a0db72211bd3f4d68ca0ac25b576d46196
Author: Rafał Miłecki <rafal at milecki.pl>
AuthorDate: Fri Aug 6 12:59:19 2021 +0200

    firmware-utils: mkmerakifw-old: replace GPL-2.0-only boilerplate with SPDX
    
    This was missed because scancode license scanner was confused by a
    comment about Cisco's GPL code github repository.
    
    Cc: Christian Lamparter <chunkeey at gmail.com>
    Signed-off-by: Rafał Miłecki <rafal at milecki.pl>
    Acked-by: Christian Lamparter <chunkeey at gmail.com>
---
 tools/firmware-utils/src/mkmerakifw-old.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/tools/firmware-utils/src/mkmerakifw-old.c b/tools/firmware-utils/src/mkmerakifw-old.c
index 05317c2a5b..76fd487a83 100644
--- a/tools/firmware-utils/src/mkmerakifw-old.c
+++ b/tools/firmware-utils/src/mkmerakifw-old.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright (C) 2015 Thomas Hebb <tommyhebb at gmail.com>
  * Copyright (C) 2016 Christian Lamparter <chunkeey at googlemail.com>
@@ -12,11 +13,6 @@
  * has been reverse engineered from the nandloader's nand_load_bk function.
  * The original code is part of Cisco's GPL code and can be found at:
  * <https://github.com/riptidewave93/meraki-linux>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 as published
- * by the Free Software Foundation.
- *
  */
 
 #include <stdio.h>