dt-binding: gpio: publish binding IDs under dual license

Changes gpio.h DT binding header file to be published under GPLv2 or
BSD-2-Clause license terms. This change allows this GPIO generic
bindings header file to be used in software components as bootloaders
and OSes that are not published under GPLv2 terms.

All contributors to gpio.h file in copy.

Cc: Stephen Warren <swarren@nvidia.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Laxman Dewangan <ldewangan@nvidia.com>
Cc: Andrew Jeffery <andrew@aj.id.au>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Cc: Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
Acked-by: Nuno Sá <nuno.sa@analog.com>
Acked-by: Andrew Jeffery <andrew@aj.id.au>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20220905145555.674800-1-etienne.carriere@linaro.org
Signed-off-by: Rob Herring <robh@kernel.org>

diff --git a/include/dt-bindings/gpio/gpio.h b/include/dt-bindings/gpio/gpio.h
index 5566e58196a223ae762069fd9cdc5ac04db18b15..b5d531237448241f1870e7d8d4cf1a6411877562 100644 (file)
--- a/include/dt-bindings/gpio/gpio.h
+++ b/include/dt-bindings/gpio/gpio.h
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0 */
+/* SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) */
 /*
  * This header provides constants for most GPIO bindings.
  *