net: use __be16 instead of u16 for the userspace code

Signed-off-by: Changli Gao <xiaosuo@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/if_pppox.h b/include/linux/if_pppox.h
index 1525b21..770e8fa 100644
--- a/include/linux/if_pppox.h
+++ b/include/linux/if_pppox.h
@@ -50,8 +50,8 @@
  * PPTP addressing definition
  */
 struct pptp_addr {
-	u16             call_id;
-	struct in_addr  sin_addr;
+	__be16		call_id;
+	struct in_addr	sin_addr;
 };
 
 /************************************************************************