x86/PCI: 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>
diff --git a/arch/x86/pci/fixup.c b/arch/x86/pci/fixup.c
index 94ae9ae..e5f000c 100644
--- a/arch/x86/pci/fixup.c
+++ b/arch/x86/pci/fixup.c
@@ -337,9 +337,7 @@
 		 * type BRIDGE, or CARDBUS. Host to PCI controllers use
 		 * PCI header type NORMAL.
 		 */
-		if (bridge
-		    && ((bridge->hdr_type == PCI_HEADER_TYPE_BRIDGE)
-		       || (bridge->hdr_type == PCI_HEADER_TYPE_CARDBUS))) {
+		if (bridge && (pci_is_bridge(bridge))) {
 			pci_read_config_word(bridge, PCI_BRIDGE_CONTROL,
 						&config);
 			if (!(config & PCI_BRIDGE_CTL_VGA))