[SUNRPC]: trivial endianness annotations

pure s/u32/__be32/

[AV: large part based on Alexey's patches]

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c
index 9b62923..28100e0 100644
--- a/net/sunrpc/xprtsock.c
+++ b/net/sunrpc/xprtsock.c
@@ -548,7 +548,8 @@
 	struct rpc_rqst *rovr;
 	struct sk_buff *skb;
 	int err, repsize, copied;
-	u32 _xid, *xp;
+	u32 _xid;
+	__be32 *xp;
 
 	read_lock(&sk->sk_callback_lock);
 	dprintk("RPC:      xs_udp_data_ready...\n");