powerpc/pci: Add release_device() hook to phb ops

Add release_device() hook to phb ops so we can clean up for specific phbs.

Signed-off-by: Michael Neuling <[e-mail]>
Signed-off-by: Michael Ellerman <[e-mail]>

arch/powerpc/include/asm/pci-bridge.h

···
 	 * allow assignment/enabling of the device. */
 	bool		(*enable_device_hook)(struct pci_dev *);
 
+	void		(*release_device)(struct pci_dev *);
+
 	/* Called during PCI resource reassignment */
 	resource_size_t (*window_alignment)(struct pci_bus *, unsigned long type);
 	void		(*reset_secondary_bus)(struct pci_dev *dev);

arch/powerpc/kernel/pci-hotplug.c

···
  */
 void pcibios_release_device(struct pci_dev *dev)
 {
+	struct pci_controller *phb = pci_bus_to_host(dev->bus);
+
 	eeh_remove_device(dev);
+
+	if (phb->controller_ops.release_device)
+		phb->controller_ops.release_device(dev);
 }
 
 /**