asus-wmi: add CWAP support and clarify the meaning of WAPF bits

ref: http://dev.iksaif.net/projects/3/wiki/Asus-laptop_WAPF

Signed-off-by: Corentin Chary <corentin.chary@gmail.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
diff --git a/drivers/platform/x86/asus-wmi.h b/drivers/platform/x86/asus-wmi.h
index 4da6103..8147c10 100644
--- a/drivers/platform/x86/asus-wmi.h
+++ b/drivers/platform/x86/asus-wmi.h
@@ -37,6 +37,7 @@
 
 struct asus_wmi_driver {
 	bool			hotplug_wireless;
+	int			wapf;
 
 	const char		*name;
 	struct module		*owner;