headers_check fix: linux/if_fc.h

fix the following 'make headers_check' warning:

  usr/include/linux/if_fc.h:37: found __[us]{8,16,32,64} type without #include <linux/types.h>
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>

include/linux/if_fc.h

@@ -20,6 +20,7 @@
 #ifndef _LINUX_IF_FC_H
 #define _LINUX_IF_FC_H
 
+#include <linux/types.h>
 
 #define FC_ALEN	6		/* Octets in one ethernet addr	 */
 #define FC_HLEN   (sizeof(struct fch_hdr)+sizeof(struct fcllc))