[IPV4]: inet_select_addr() annotations

argument and return value are net-endian.  Annotated function and inferred
net-endian variables in callers.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/icmp.c b/net/ipv4/icmp.c
index c2ad07e..fd39685 100644
--- a/net/ipv4/icmp.c
+++ b/net/ipv4/icmp.c
@@ -437,7 +437,7 @@
 	struct icmp_bxm icmp_param;
 	struct rtable *rt = (struct rtable *)skb_in->dst;
 	struct ipcm_cookie ipc;
-	u32 saddr;
+	__be32 saddr;
 	u8  tos;
 
 	if (!rt)