arcnet endianness annotations

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/include/linux/if_arcnet.h b/include/linux/if_arcnet.h
index af380cb..27ea2ac 100644
--- a/include/linux/if_arcnet.h
+++ b/include/linux/if_arcnet.h
@@ -59,7 +59,7 @@
 {
     uint8_t  proto;		/* protocol ID field - varies		*/
     uint8_t  split_flag;	/* for use with split packets		*/
-    uint16_t sequence;		/* sequence number			*/
+    __be16   sequence;		/* sequence number			*/
     uint8_t  payload[0];	/* space remaining in packet (504 bytes)*/
 };
 #define RFC1201_HDR_SIZE 4