pci: Q35, Root Ports, and Switches create PCI Express buses

Convert q35, ioh3420, xio3130_upstream, and xio3130_downstream to
use the new TYPE_PCIE_BUS.
Signed-off-by: NAlex Williamson <alex.williamson@redhat.com>
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>

hw/ioh3420.c

@@ -97,7 +97,7 @@ static int ioh3420_initfn(PCIDevice *d)
     PCIESlot *s = DO_UPCAST(PCIESlot, port, p);
     int rc;
 
-    rc = pci_bridge_initfn(d, TYPE_PCI_BUS);
+    rc = pci_bridge_initfn(d, TYPE_PCIE_BUS);
     if (rc < 0) {
         return rc;
     }

hw/q35.c

@@ -55,7 +55,7 @@ static int q35_host_init(SysBusDevice *dev)
     }
     b = pci_bus_new(&s->host.pci.busdev.qdev, "pcie.0",
                     s->mch.pci_address_space, s->mch.address_space_io,
-                    0, TYPE_PCI_BUS);
+                    0, TYPE_PCIE_BUS);
     s->host.pci.bus = b;
     qdev_set_parent_bus(DEVICE(&s->mch), BUS(b));
     qdev_init_nofail(DEVICE(&s->mch));

hw/xio3130_downstream.c

@@ -61,7 +61,7 @@ static int xio3130_downstream_initfn(PCIDevice *d)
     PCIESlot *s = DO_UPCAST(PCIESlot, port, p);
     int rc;
 
-    rc = pci_bridge_initfn(d, TYPE_PCI_BUS);
+    rc = pci_bridge_initfn(d, TYPE_PCIE_BUS);
     if (rc < 0) {
         return rc;
     }

hw/xio3130_upstream.c

@@ -57,7 +57,7 @@ static int xio3130_upstream_initfn(PCIDevice *d)
     PCIEPort *p = DO_UPCAST(PCIEPort, br, br);
     int rc;
 
-    rc = pci_bridge_initfn(d, TYPE_PCI_BUS);
+    rc = pci_bridge_initfn(d, TYPE_PCIE_BUS);
     if (rc < 0) {
         return rc;
     }