x86/PCI: use dev_printk for PCI bus locality messages

Since pci_bus has a struct device, use dev_printk directly instead
of faking it by hand.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
diff --git a/arch/x86/pci/acpi.c b/arch/x86/pci/acpi.c
index 6c76837..c0ecf25 100644
--- a/arch/x86/pci/acpi.c
+++ b/arch/x86/pci/acpi.c
@@ -210,12 +210,10 @@
 	if (bus && node != -1) {
 #ifdef CONFIG_ACPI_NUMA
 		if (pxm >= 0)
-			printk(KERN_DEBUG
-			       "pci %04x:%02x: bus on NUMA node %d (pxm %d)\n",
-				domain, busnum, node, pxm);
+			dev_printk(KERN_DEBUG, &bus->dev,
+				   "on NUMA node %d (pxm %d)\n", node, pxm);
 #else
-		printk(KERN_DEBUG "pci %04x:%02x: bus on NUMA node %d\n",
-			domain, busnum, node);
+		dev_printk(KERN_DEBUG, &bus->dev, "on NUMA node %d\n", node);
 #endif
 	}