PCI: use for_each_pci_dev()

Use for_each_pci_dev() to simplify the code.

Signed-off-by: Kulikov Vasiliy <segooon@gmail.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
diff --git a/drivers/pci/proc.c b/drivers/pci/proc.c
index 68316b5..01f0306 100644
--- a/drivers/pci/proc.c
+++ b/drivers/pci/proc.c
@@ -483,9 +483,9 @@
 	proc_create("devices", 0, proc_bus_pci_dir,
 		    &proc_bus_pci_dev_operations);
 	proc_initialized = 1;
-	while ((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) {
+	for_each_pci_dev(dev)
 		pci_proc_attach_device(dev);
-	}
+
 	return 0;
 }