[XFRM] Move xfrm4_rcv export to its site

[Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>]

Hi:

Here is a trivial patch that moves xfrm4_rcv's export to the
site of its definition.  Currently it lives in net/xfrm which
is miles away.

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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