PCI: cpcihp: Use pci_is_bridge() to simplify code

Use pci_is_bridge() to simplify code.  No functional change.

Requires: 326c1cdae741 PCI: Rename pci_is_bridge() to pci_has_subordinate()
Requires: 1c86438c9423 PCI: Add new pci_is_bridge() interface
Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

drivers/pci/hotplug/cpci_hotplug_pci.c

@@ -289,8 +289,7 @@ int __ref cpci_configure_slot(struct slot *slot)
 	list_for_each_entry(dev, &parent->devices, bus_list)
 		if (PCI_SLOT(dev->devfn) != PCI_SLOT(slot->devfn))
 			continue;
-		if ((dev->hdr_type == PCI_HEADER_TYPE_BRIDGE) ||
-		    (dev->hdr_type == PCI_HEADER_TYPE_CARDBUS))
+		if (pci_is_bridge(dev))
 			pci_hp_add_bridge(dev);