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/core/fib_rules.c b/net/core/fib_rules.c
index a20e5d3..8248ebb 100644
--- a/net/core/fib_rules.c
+++ b/net/core/fib_rules.c
@@ -181,13 +181,13 @@
 {
 	int ret = 0;
 
-	if (rule->iifindex && (rule->iifindex != fl->iif))
+	if (rule->iifindex && (rule->iifindex != fl->flowi_iif))
 		goto out;
 
-	if (rule->oifindex && (rule->oifindex != fl->oif))
+	if (rule->oifindex && (rule->oifindex != fl->flowi_oif))
 		goto out;
 
-	if ((rule->mark ^ fl->mark) & rule->mark_mask)
+	if ((rule->mark ^ fl->flowi_mark) & rule->mark_mask)
 		goto out;
 
 	ret = ops->match(rule, fl, flags);