target: change core_tpg_register prototype

Remove the unneeded fabric_ptr argument, and change the type argument
to pass in a SPC protocol identifier.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
diff --git a/drivers/xen/xen-scsiback.c b/drivers/xen/xen-scsiback.c
index 3756953..223d493 100644
--- a/drivers/xen/xen-scsiback.c
+++ b/drivers/xen/xen-scsiback.c
@@ -1883,8 +1883,8 @@
 	tpg->tport = tport;
 	tpg->tport_tpgt = tpgt;
 
-	ret = core_tpg_register(&scsiback_ops, wwn,
-				&tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL);
+	ret = core_tpg_register(&scsiback_ops, wwn, &tpg->se_tpg,
+				tport->tport_proto_id);
 	if (ret < 0) {
 		kfree(tpg);
 		return NULL;