HID: emsff: use symbolic name instead of hardcoded PID constant

Use macro instead of 0x118 PID in device table.
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

drivers/hid/hid-emsff.c

@@ -139,7 +139,7 @@ static int ems_probe(struct hid_device *hdev, const struct hid_device_id *id)
 }
 
 static const struct hid_device_id ems_devices[] = {
-	{ HID_USB_DEVICE(USB_VENDOR_ID_EMS, 0x118) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_EMS, USB_DEVICE_ID_EMS_TRIO_LINKER_PLUS_II) },
 	{ }
 };
 MODULE_DEVICE_TABLE(hid, ems_devices);