asus-wmi: move WAPF variable into quirks_entry

Some models work better with different values of wapf, so move the
variable into quriks_entry to make it more easy to give a specific
value to different models.

Based on original patch from AceLan Kao <[e-mail]>

Cc: AceLan Kao <[e-mail]>
Signed-off-by: Corentin Chary <[e-mail]>
Signed-off-by: Matthew Garrett <[e-mail]>

drivers/platform/x86/asus-nb-wmi.c

···
 module_param(wapf, uint, 0444);
 MODULE_PARM_DESC(wapf, "WAPF value");
 
+static struct quirk_entry quirk_asus_unknown = {
+};
+
 static void asus_nb_wmi_quirks(struct asus_wmi_driver *driver)
 {
-	driver->wapf = wapf;
+	driver->quirks = &quirk_asus_unknown;
+	driver->quirks->wapf = wapf;
 }
 
 static const struct key_entry asus_nb_wmi_keymap[] = {

drivers/platform/x86/asus-wmi.c

···
 
 	/* CWAP allow to define the behavior of the Fn+F2 key,
 	 * this method doesn't seems to be present on Eee PCs */
-	if (asus->driver->wapf >= 0)
+	if (asus->driver->quirks->wapf >= 0)
 		asus_wmi_set_devstate(ASUS_WMI_DEVID_CWAP,
-				      asus->driver->wapf, NULL);
+				      asus->driver->quirks->wapf, NULL);
 
 	return asus_wmi_sysfs_init(asus->platform_device);
 }

drivers/platform/x86/asus-wmi.h

···
 	bool hotplug_wireless;
 	bool scalar_panel_brightness;
 	bool store_backlight_power;
+	int wapf;
 };
 
 struct asus_wmi_driver {
-	int			wapf;
 	int			brightness;
 	int			panel_power;
 

drivers/platform/x86/eeepc-wmi.c

···
 
 static void eeepc_wmi_quirks(struct asus_wmi_driver *driver)
 {
-	driver->wapf = -1;
 	driver->panel_power = FB_BLANK_UNBLANK;
 	driver->quirks = &quirk_asus_unknown;
 	driver->quirks->hotplug_wireless = hotplug_wireless;
+	driver->quirks->wapf = -1;
 	dmi_check_system(asus_quirks);
 	driver->quirks = quirks;
 }