net: Put flowi_* prefix on AF independent members of struct flowi

I intend to turn struct flowi into a union of AF specific flowi
structs.  There will be a common structure that each variant includes
first, much like struct sock_common.

This is the first step to move in that direction.

Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index c9a73e5..e10f62e 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -908,16 +908,17 @@
 		rt = (struct rtable *)sk_dst_check(sk, 0);
 
 	if (rt == NULL) {
-		struct flowi fl = { .oif = ipc.oif,
-				    .mark = sk->sk_mark,
-				    .fl4_dst = faddr,
-				    .fl4_src = saddr,
-				    .fl4_tos = tos,
-				    .proto = sk->sk_protocol,
-				    .flags = (inet_sk_flowi_flags(sk) |
-					      FLOWI_FLAG_CAN_SLEEP),
-				    .fl_ip_sport = inet->inet_sport,
-				    .fl_ip_dport = dport
+		struct flowi fl = {
+			.flowi_oif = ipc.oif,
+			.flowi_mark = sk->sk_mark,
+			.fl4_dst = faddr,
+			.fl4_src = saddr,
+			.fl4_tos = tos,
+			.flowi_proto = sk->sk_protocol,
+			.flowi_flags = (inet_sk_flowi_flags(sk) |
+				     FLOWI_FLAG_CAN_SLEEP),
+			.fl_ip_sport = inet->inet_sport,
+			.fl_ip_dport = dport,
 		};
 		struct net *net = sock_net(sk);