PCI: hotplug: Add hotplug_is_native()

Add hotplug_is_native() to find out whether the OS is supposed to handle
native hotplug of a given bridge.
Signed-off-by: NMika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>
Reviewed-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>

include/linux/pci_hotplug.h

@@ -181,4 +181,9 @@ static inline int acpi_get_hp_hw_control_from_firmware(struct pci_dev *bridge)
 static inline bool pciehp_is_native(struct pci_dev *bridge) { return true; }
 static inline bool shpchp_is_native(struct pci_dev *bridge) { return true; }
 #endif
+
+static inline bool hotplug_is_native(struct pci_dev *bridge)
+{
+	return pciehp_is_native(bridge) || shpchp_is_native(bridge);
+}
 #endif