include: import header files from kernel v4.15-rc5

Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

include/linux/can/gw.h

@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) */
 /*
  * linux/can/gw.h
  *
@@ -41,8 +42,8 @@
  * DAMAGE.
  */
 
-#ifndef CAN_GW_H
-#define CAN_GW_H
+#ifndef _UAPI_CAN_GW_H
+#define _UAPI_CAN_GW_H
 
 #include <linux/types.h>
 #include <linux/can.h>
@@ -205,4 +206,4 @@ enum {
  *         Beware of sending unpacked or aligned structs!
  */
 
-#endif
+#endif /* !_UAPI_CAN_GW_H */