Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/include/linux/pinctrl/pinctrl-state.h b/include/linux/pinctrl/pinctrl-state.h
index a0e7858..635d97e 100644
--- a/include/linux/pinctrl/pinctrl-state.h
+++ b/include/linux/pinctrl/pinctrl-state.h
@@ -3,6 +3,9 @@
  * Standard pin control state definitions
  */
 
+#ifndef __LINUX_PINCTRL_PINCTRL_STATE_H
+#define __LINUX_PINCTRL_PINCTRL_STATE_H
+
 /**
  * @PINCTRL_STATE_DEFAULT: the state the pinctrl handle shall be put
  *	into as default, usually this means the pins are up and ready to
@@ -31,3 +34,5 @@
 #define PINCTRL_STATE_INIT "init"
 #define PINCTRL_STATE_IDLE "idle"
 #define PINCTRL_STATE_SLEEP "sleep"
+
+#endif /* __LINUX_PINCTRL_PINCTRL_STATE_H */