PCI: make pci_bus a struct device

This moves the pci_bus class device to be a real struct device and at
the same time, place it in the device tree in the correct location.

Note, the old "bridge" symlink is now gone, but this was a non-standard
link and no userspace program used it.  If you need to determine the
device that the bus is on, follow the standard device symlink, or walk
up the device tree.


Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
index 79887ef..eabeb1f 100644
--- a/drivers/pci/pci.h
+++ b/drivers/pci/pci.h
@@ -64,7 +64,7 @@
 }
 extern int pcie_mch_quirk;
 extern struct device_attribute pci_dev_attrs[];
-extern struct class_device_attribute class_device_attr_cpuaffinity;
+extern struct device_attribute dev_attr_cpuaffinity;
 
 /**
  * pci_match_one_device - Tell if a PCI device structure has a matching