NTB: ntb_hw_idt: Set NTB_TOPO_SWITCH topology

Since Switchtec patch there has been a new topology added to
the NTB API. It's called NTB_TOPO_SWITCH and dedicated for
PCIe switch chips. Even though topo field isn't used within the
IDT driver much, lets set it for the sake of unification.
Signed-off-by: Serge Semin <fancer.lancer@gmail.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>

drivers/ntb/hw/idt/ntb_hw_idt.c

@@ -2070,7 +2070,7 @@ static int idt_register_device(struct idt_ntb_dev *ndev)
 
 	/* Initialize the rest of NTB device structure and register it */
 	ndev->ntb.ops = &idt_ntb_ops;
-	ndev->ntb.topo = NTB_TOPO_PRI;
+	ndev->ntb.topo = NTB_TOPO_SWITCH;
 
 	ret = ntb_register_device(&ndev->ntb);
 	if (ret != 0) {