NFS: Display the chosen RPCSEC_GSS security flavour in /proc/mounts

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/net/sunrpc/auth_unix.c b/net/sunrpc/auth_unix.c
index df14b6b..74c7406 100644
--- a/net/sunrpc/auth_unix.c
+++ b/net/sunrpc/auth_unix.c
@@ -225,6 +225,7 @@
 	.au_cslack	= UNX_WRITESLACK,
 	.au_rslack	= 2,			/* assume AUTH_NULL verf */
 	.au_ops		= &authunix_ops,
+	.au_flavor	= RPC_AUTH_UNIX,
 	.au_count	= ATOMIC_INIT(0),
 	.au_credcache	= &unix_cred_cache,
 };