PCI: acpiphp: merge acpiphp_debug and debug

Should not have two, just remove debug, and use module_param_named
instead.

Also change acpiphp_debug to bool.

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
diff --git a/drivers/pci/hotplug/acpiphp.h b/drivers/pci/hotplug/acpiphp.h
index 6b58ed04..a1afb5b 100644
--- a/drivers/pci/hotplug/acpiphp.h
+++ b/drivers/pci/hotplug/acpiphp.h
@@ -205,6 +205,6 @@
 extern u8 acpiphp_get_adapter_status (struct acpiphp_slot *slot);
 
 /* variables */
-extern int acpiphp_debug;
+extern bool acpiphp_debug;
 
 #endif /* _ACPIPHP_H */