[PATCH] pinctrl: pinctrl-single: add header include guard

[Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx>]

Add a header include guard just in case.

Signed-off-by: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx>
---

 include/linux/platform_data/pinctrl-single.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/include/linux/platform_data/pinctrl-single.h b/include/linux/platform_data/pinctrl-single.h
index 1cf36fdf9510..7473d3c4cabf 100644
--- a/include/linux/platform_data/pinctrl-single.h
+++ b/include/linux/platform_data/pinctrl-single.h
@@ -1,4 +1,8 @@
 /* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef _PINCTRL_SINGLE_H
+#define _PINCTRL_SINGLE_H
+
 /**
  * irq:		optional wake-up interrupt
  * rearm:	optional soc specific rearm function
@@ -11,3 +15,5 @@ struct pcs_pdata {
 	int irq;
 	void (*rearm)(void);
 };
+
+#endif /* _PINCTRL_SINGLE_H */
-- 
2.17.1