PCI: Rename extend_bridge_window() parameter

In extend_bridge_window(), change "available" parameter name to "new_size".
This makes more sense as this parameter represents the new size for the
window.  No functional change intended.

Link: https://lore.kernel.org/r/PSXP216MB043853617ECA4118C472A417803C0@PSXP216MB0438.KORP216.PROD.OUTLOOK.COMSigned-off-by: Nicholas Johnson <nicholas.johnson-opensource@outlook.com.au>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>

drivers/pci/setup-bus.c

@@ -1840,14 +1840,14 @@ void __init pci_assign_unassigned_resources(void)
 
 static void extend_bridge_window(struct pci_dev *bridge, struct resource *res,
 				 struct list_head *add_list,
-				 resource_size_t available)
+				 resource_size_t new_size)
 {
 	struct pci_dev_resource *dev_res;
 
 	if (res->parent)
 		return;
 
-	if (resource_size(res) >= available)
+	if (resource_size(res) >= new_size)
 		return;
 
 	dev_res = res_to_dev_res(add_list, res);
@@ -1855,10 +1855,10 @@ static void extend_bridge_window(struct pci_dev *bridge, struct resource *res,
 		return;
 
 	/* Is there room to extend the window? */
-	if (available - resource_size(res) <= dev_res->add_size)
+	if (new_size - resource_size(res) <= dev_res->add_size)
 		return;
 
-	dev_res->add_size = available - resource_size(res);
+	dev_res->add_size = new_size - resource_size(res);
 	pci_dbg(bridge, "bridge window %pR extended by %pa\n", res,
 		&dev_res->add_size);
 }