eCryptfs: Print mount_auth_tok_only param in ecryptfs_show_options

When printing mount options, print the new ecryptfs_mount_auth_tok_only
mount option.

Signed-off-by: Tyler Hicks <tyhicks@linux.vnet.ibm.com>
diff --git a/fs/ecryptfs/super.c b/fs/ecryptfs/super.c
index f7fc286..2537323 100644
--- a/fs/ecryptfs/super.c
+++ b/fs/ecryptfs/super.c
@@ -180,6 +180,8 @@
 		seq_printf(m, ",ecryptfs_encrypted_view");
 	if (mount_crypt_stat->flags & ECRYPTFS_UNLINK_SIGS)
 		seq_printf(m, ",ecryptfs_unlink_sigs");
+	if (mount_crypt_stat->flags & ECRYPTFS_GLOBAL_MOUNT_AUTH_TOK_ONLY)
+		seq_printf(m, ",ecryptfs_mount_auth_tok_only");
 
 	return 0;
 }