NFS: Added TEST_STATEID call

This patch adds in the xdr for doing a TEST_STATEID call with a single
stateid. RFC 5661 allows multiple stateids to be tested in a single
call, but only testing one keeps things simpler for now.

Signed-off-by: Bryan Schumaker <bjschuma@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/include/linux/nfs4.h b/include/linux/nfs4.h
index 7cc7d57..efe07f7 100644
--- a/include/linux/nfs4.h
+++ b/include/linux/nfs4.h
@@ -564,6 +564,7 @@
 	NFSPROC4_CLNT_LAYOUTCOMMIT,
 	NFSPROC4_CLNT_LAYOUTRETURN,
 	NFSPROC4_CLNT_SECINFO_NO_NAME,
+	NFSPROC4_CLNT_TEST_STATEID,
 };
 
 /* nfs41 types */