xfrm: Export xfrm_parse_spi.

We need it in the ESP offload handlers, so export it.

Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>

net/xfrm/xfrm_input.c

@@ -170,6 +170,7 @@ int xfrm_parse_spi(struct sk_buff *skb, u8 nexthdr, __be32 *spi, __be32 *seq)
 	*seq = *(__be32 *)(skb_transport_header(skb) + offset_seq);
 	return 0;
 }
+EXPORT_SYMBOL(xfrm_parse_spi);
 
 int xfrm_prepare_input(struct xfrm_state *x, struct sk_buff *skb)
 {