versatile_pci: convert to symbolic names

This converts versatile_pci to use symbolic
constants. Verified by comparing binary to
original one.
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
Acked-by: NAnthony Liguori <aliguori@us.ibm.com>

hw/versatile_pci.c

@@ -147,14 +147,17 @@ static int versatile_pci_host_init(PCIDevice *d)
     pci_config_set_vendor_id(d->config, PCI_VENDOR_ID_XILINX);
     /* Both boards have the same device ID.  Oh well.  */
     pci_config_set_device_id(d->config, PCI_DEVICE_ID_XILINX_XC2VP30);
-    d->config[0x04] = 0x00;
-    d->config[0x05] = 0x00;
-    d->config[0x06] = 0x20;
-    d->config[0x07] = 0x02;
-    d->config[0x08] = 0x00; // revision
-    d->config[0x09] = 0x00; // programming i/f
+    /* TODO: no need to clear command */
+    pci_set_byte(d->config + PCI_COMMAND, 0x00);
+    pci_set_byte(d->config + PCI_COMMAND + 1, 0x00);
+    /* TODO: convert to set_word */
+    pci_set_byte(d->config + PCI_STATUS, PCI_STATUS_66MHZ);
+    pci_set_byte(d->config + PCI_STATUS + 1, PCI_STATUS_DEVSEL_MEDIUM >> 8);
+    /* TODO: no need to clear revision/prog ifc */
+    pci_set_byte(d->config + PCI_REVISION_ID, 0x00);
+    pci_set_byte(d->config + PCI_CLASS_PROG, 0x00);
     pci_config_set_class(d->config, PCI_CLASS_PROCESSOR_CO);
-    d->config[0x0D] = 0x10; // latency_timer
+    pci_set_byte(d->config + PCI_LATENCY_TIMER, 0x10);
     return 0;
 }