SUNRPC: New xdr_streams XDR decoder API

Now that all client-side XDR decoder routines use xdr_streams, there
should be no need to support the legacy calling sequence [rpc_rqst *,
__be32 *, RPC res *] anywhere.  We can construct an xdr_stream in the
generic RPC code, instead of in each decoder function.

This is a refactoring change.  It should not cause different behavior.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Tested-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/include/linux/sunrpc/clnt.h b/include/linux/sunrpc/clnt.h
index 7b19c4e..ef9476a 100644
--- a/include/linux/sunrpc/clnt.h
+++ b/include/linux/sunrpc/clnt.h
@@ -90,7 +90,7 @@
 struct rpc_procinfo {
 	u32			p_proc;		/* RPC procedure number */
 	kxdreproc_t		p_encode;	/* XDR encode function */
-	kxdrproc_t		p_decode;	/* XDR decode function */
+	kxdrdproc_t		p_decode;	/* XDR decode function */
 	unsigned int		p_arglen;	/* argument hdr length (u32) */
 	unsigned int		p_replen;	/* reply hdr length (u32) */
 	unsigned int		p_count;	/* call count */