PCI: add pci_bus_for_each_resource(), remove direct bus->resource[] refs

No functional change; this converts loops that iterate from 0 to
PCI_BUS_NUM_RESOURCES through pci_bus resource[] table to use the
pci_bus_for_each_resource() iterator instead.

This doesn't change the way resources are stored; it merely removes
dependencies on the fact that they're in a table.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c
index 743ed8c..bf32f07 100644
--- a/drivers/pci/setup-bus.c
+++ b/drivers/pci/setup-bus.c
@@ -387,8 +387,7 @@
 	unsigned long type_mask = IORESOURCE_IO | IORESOURCE_MEM |
 				  IORESOURCE_PREFETCH;
 
-	for (i = 0; i < PCI_BUS_NUM_RESOURCES; i++) {
-		r = bus->resource[i];
+	pci_bus_for_each_resource(bus, r, i) {
 		if (r == &ioport_resource || r == &iomem_resource)
 			continue;
 		if (r && (r->flags & type_mask) == type && !r->parent)
@@ -803,11 +802,10 @@
 
 static void pci_bus_dump_res(struct pci_bus *bus)
 {
-        int i;
+	struct resource *res;
+	int i;
 
-        for (i = 0; i < PCI_BUS_NUM_RESOURCES; i++) {
-                struct resource *res = bus->resource[i];
-
+	pci_bus_for_each_resource(bus, res, i) {
 		if (!res || !res->end || !res->flags)
                         continue;