Since the "2 | 3+" expression can be simplified as "2+",
it is pointless to mention the GPLv3 license.

Add the corresponding SPDX identifier to remove all doubt.

Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 include/qemu/timed-average.h | 4 +++-
 block/vdi.c                  | 4 +++-
 hw/net/eepro100.c            | 4 +++-
 hw/ppc/rs6000_mc.c           | 4 +++-
 util/timed-average.c         | 4 +++-
 qemu.nsi                     | 4 +++-
 6 files changed, 18 insertions(+), 6 deletions(-)

diff --git a/include/qemu/timed-average.h b/include/qemu/timed-average.h
index 08245e7a10..dfd8d653fa 100644
--- a/include/qemu/timed-average.h
+++ b/include/qemu/timed-average.h
@@ -8,10 +8,12 @@
  *   Benoît Canet <benoit.canet@nodalink.com>
  *   Alberto Garcia <berto@igalia.com>
  *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ *
  * 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) version 3 or any later version.
+ * (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
diff --git a/block/vdi.c b/block/vdi.c
index 6363da08ce..149e15c831 100644
--- a/block/vdi.c
+++ b/block/vdi.c
@@ -3,10 +3,12 @@
  *
  * Copyright (c) 2009, 2012 Stefan Weil
  *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ *
  * 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) version 3 or any later version.
+ * (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
diff --git a/hw/net/eepro100.c b/hw/net/eepro100.c
index d9a70c4544..c8a88b9813 100644
--- a/hw/net/eepro100.c
+++ b/hw/net/eepro100.c
@@ -6,10 +6,12 @@
  * Portions of the code are copies from grub / etherboot eepro100.c
  * and linux e100.c.
  *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ *
  * 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) version 3 or any later version.
+ * (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
diff --git a/hw/ppc/rs6000_mc.c b/hw/ppc/rs6000_mc.c
index e6ec4b4c40..07b0b664d9 100644
--- a/hw/ppc/rs6000_mc.c
+++ b/hw/ppc/rs6000_mc.c
@@ -3,10 +3,12 @@
  *
  * Copyright (c) 2017 Hervé Poussineau
  *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ *
  * 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) version 3 or any later version.
+ * (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
diff --git a/util/timed-average.c b/util/timed-average.c
index 2b49d532ce..5b5c22afd8 100644
--- a/util/timed-average.c
+++ b/util/timed-average.c
@@ -8,10 +8,12 @@
  *   Benoît Canet <benoit.canet@nodalink.com>
  *   Alberto Garcia <berto@igalia.com>
  *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ *
  * 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) version 3 or any later version.
+ * (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
diff --git a/qemu.nsi b/qemu.nsi
index 564d617d11..b186f223e1 100644
--- a/qemu.nsi
+++ b/qemu.nsi
@@ -7,7 +7,7 @@
 ; 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) version 3 or any later version.
+; (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
@@ -16,6 +16,8 @@
 ;
 ; You should have received a copy of the GNU General Public License
 ; along with this program.  If not, see <http://www.gnu.org/licenses/>.
+;
+; SPDX-License-Identifier: GPL-2.0-or-later
 
 ; NSIS_WIN32_MAKENSIS
 
-- 
2.45.2