[PATCH] dt-bindings: pinctrl: stm32: fix copyright and adopt SPDX identifier

[Alexandre Torgue]

Add missing copyright and add SPDX identifier.

Signed-off-by: Alexandre Torgue <alexandre.torgue at st.com>

diff --git a/include/dt-bindings/pinctrl/stm32-pinfunc.h b/include/dt-bindings/pinctrl/stm32-pinfunc.h
index b8dfe31..b5a2174 100644
--- a/include/dt-bindings/pinctrl/stm32-pinfunc.h
+++ b/include/dt-bindings/pinctrl/stm32-pinfunc.h
@@ -1,3 +1,9 @@
+/* SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) */
+/*
+ * Copyright (C) STMicroelectronics 2017 - All Rights Reserved
+ * Author: Torgue Alexandre <alexandre.torgue at st.com> for STMicroelectronics.
+ */
+
 #ifndef _DT_BINDINGS_STM32_PINFUNC_H
 #define _DT_BINDINGS_STM32_PINFUNC_H
 
-- 
2.7.4