PCI: Add pcibios_add_device

Platforms may want to provide architecture-specific functionality during
PCI enumeration. Add a pcibios_add_device() call that architectures can
override to do so.

Signed-off-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Tested-by: Seth Forshee <seth.forshee@canonical.com>
diff --git a/drivers/pci/bus.c b/drivers/pci/bus.c
index 6241fd0..4f22fa1 100644
--- a/drivers/pci/bus.c
+++ b/drivers/pci/bus.c
@@ -170,6 +170,11 @@
 	int retval;
 
 	pci_fixup_device(pci_fixup_final, dev);
+
+	retval = pcibios_add_device(dev);
+	if (retval)
+		return retval;
+
 	retval = device_add(&dev->dev);
 	if (retval)
 		return retval;