net: phy: aquantia: add missing include guards

The header is missing the include guards so add them.

Reviewed-by: Andrew Lunn <[email protected]>
Fixes: fb470f7 ("net: phy: aquantia: add hwmon support")
Signed-off-by: Bartosz Golaszewski <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>

Author: Bartosz Golaszewski

drivers/net/phy/aquantia/aquantia.h

@@ -6,6 +6,9 @@
  * Author: Heiner Kallweit <[email protected]>
  */
 
+#ifndef AQUANTIA_H
+#define AQUANTIA_H
+
 #include <linux/device.h>
 #include <linux/phy.h>
 
@@ -120,3 +123,5 @@ static inline int aqr_hwmon_probe(struct phy_device *phydev) { return 0; }
 #endif
 
 int aqr_firmware_load(struct phy_device *phydev);
+
+#endif /* AQUANTIA_H */