PCI: Move pci_ari_enabled() to global header

pci_ari_enabled() is useful outside of drivers/pci, particularly for
deriving INTx routing via ACPI _PRT, so move it to the global header.
Also convert to bool return.

Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Don Dutile <ddutile@redhat.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/pci/pci.h

@@ -216,17 +216,6 @@ void __pci_bus_assign_resources(const struct pci_bus *bus,
 				struct list_head *fail_head);
 bool pci_bus_clip_resource(struct pci_dev *dev, int idx);
 
-/**
- * pci_ari_enabled - query ARI forwarding status
- * @bus: the PCI bus
- *
- * Returns 1 if ARI forwarding is enabled, or 0 if not enabled;
- */
-static inline int pci_ari_enabled(struct pci_bus *bus)
-{
-	return bus->self && bus->self->ari_enabled;
-}
-
 void pci_reassigndev_resource_alignment(struct pci_dev *dev);
 void pci_disable_bridge_window(struct pci_dev *dev);
 

include/linux/pci.h

@@ -1905,4 +1905,15 @@ static inline bool pci_is_dev_assigned(struct pci_dev *pdev)
 {
 	return (pdev->dev_flags & PCI_DEV_FLAGS_ASSIGNED) == PCI_DEV_FLAGS_ASSIGNED;
 }
+
+/**
+ * pci_ari_enabled - query ARI forwarding status
+ * @bus: the PCI bus
+ *
+ * Returns true if ARI forwarding is enabled.
+ */
+static inline bool pci_ari_enabled(struct pci_bus *bus)
+{
+	return bus->self && bus->self->ari_enabled;
+}
 #endif /* LINUX_PCI_H */