headers_check fix: linux/if_strip.h

fix the following 'make headers_check' warning:

usr/include/linux/if_strip.h:22: found __[us]{8,16,32,64} type without #include <linux/types.h>

Signed-off-by: Jaswinder Singh Rajput <[e-mail]>

include/linux/if_strip.h

···
 #ifndef __LINUX_STRIP_H
 #define __LINUX_STRIP_H
 
+#include <linux/types.h>
+
 typedef struct {
     __u8 c[6];
 } MetricomAddress;