PCI: shpchp: Remove get_hp_hw_control_from_firmware() wrapper

get_hp_hw_control_from_firmware() is a trivial wrapper around
acpi_get_hp_hw_control_from_firmware(), probably intended to be generic in
case other firmware needed similar OS/platform negotiation.

Remove get_hp_hw_control_from_firmware() and call
acpi_get_hp_hw_control_from_firmware() directly.  Add a stub for
acpi_get_hp_hw_control_from_firmware() for the non-ACPI case.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
diff --git a/include/linux/pci_hotplug.h b/include/linux/pci_hotplug.h
index 3959121..1f5c935 100644
--- a/include/linux/pci_hotplug.h
+++ b/include/linux/pci_hotplug.h
@@ -172,6 +172,11 @@ static inline int pci_get_hp_params(struct pci_dev *dev,
 {
 	return -ENODEV;
 }
+
+static inline int acpi_get_hp_hw_control_from_firmware(struct pci_dev *bridge)
+{
+	return 0;
+}
 static inline bool pciehp_is_native(struct pci_dev *bridge) { return true; }
 #endif
 #endif