[AGPGART] isoch.c: replace pci_find_device with pci_get_device

As pci_find_device is going away soon I have converted this file to use
pci_get_device instead. for_each_pci_dev is just a macro wrapper around
pci_get_device.  I have compile tested it. If anyone has this hardware
and could test it that would be great.
Signed-off-by: Hanna Linder <hannal@us.ibm.com>
Signed-off-by: Dave Jones <davej@redhat.com>

drivers/char/agp/isoch.c

@@ -347,7 +347,7 @@ int agp_3_5_enable(struct agp_bridge_data *bridge)
 	INIT_LIST_HEAD(head);
 
 	/* Find all AGP devices, and add them to dev_list. */
-	while ((dev = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) {
+	for_each_pci_dev(dev) {
 		mcapndx = pci_find_capability(dev, PCI_CAP_ID_AGP);
 		if (mcapndx == 0)
 			continue;