PCI: Export symbols required for loadable host driver modules

Export the following symbols so they can be referenced by a PCI host bridge
driver compiled as a kernel loadable module:

  pci_common_swizzle
  pci_create_root_bus
  pci_stop_root_bus
  pci_remove_root_bus
  pci_assign_unassigned_bus_resources
  pci_fixup_irqs

Signed-off-by: Ray Jui <rjui@broadcom.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 81f06e8..14e7f3c 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -2492,6 +2492,7 @@
 	*pinp = pin;
 	return PCI_SLOT(dev->devfn);
 }
+EXPORT_SYMBOL_GPL(pci_common_swizzle);
 
 /**
  *	pci_release_region - Release a PCI bar