[2/2] [IPSEC] Move xfrm[46]_tunnel_check_size into xfrm[46]_output.c

[Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>]

This patch moves xfrm[46]_tunnel_check_size() into xfrm[46]_output.c
where it can be made static since it's only used there.

While moving the icmp.h inclusions over I also discovered that the
tunnel files are missing an inclusion of net/protocol.h.  So I've
added them as well.

Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>

Cheers,
-- 
Visit Openswan at http://www.openswan.org/
Email: Herbert Xu ~{PmV>HI~} <herbert@xxxxxxxxxxxxxxxxxxx>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt

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