[IPV6]: Uninline netfilter okfns

Uninline netfilter okfns for those cases where gcc can generate tail-calls.

Before:
   text    data     bss     dec     hex filename
8994153 1016524  524652 10535329         a0c1a1 vmlinux

After:
   text    data     bss     dec     hex filename
8992761 1016524  524652 10533937         a0bc31 vmlinux
-------------------------------------------------------
  -1392

All cases have been verified to generate tail-calls with and without netfilter.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/ipv6/ip6_input.c

diff --git a/net/ipv6/ip6_input.c b/net/ipv6/ip6_input.c
index 9149fc2..e7c8506 100644
--- a/net/ipv6/ip6_input.c
+++ b/net/ipv6/ip6_input.c
@@ -149,7 +149,7 @@
  */
 
 
-static inline int ip6_input_finish(struct sk_buff *skb)
+static int ip6_input_finish(struct sk_buff *skb)
 {
 	struct inet6_protocol *ipprot;
 	struct sock *raw_sk;

net/ipv6/ip6_output.c

diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index 011082e..13565df 100644
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -70,7 +70,7 @@
 	spin_unlock_bh(&ip6_id_lock);
 }
 
-static inline int ip6_output_finish(struct sk_buff *skb)
+static int ip6_output_finish(struct sk_buff *skb)
 {
 	struct dst_entry *dst = skb->dst;