HID: usbhid: use to_usb_device

Use to_usb_device() instead of open-coding it.
Signed-off-by: Geliang Tang <geliangtang@163.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

drivers/hid/usbhid/usbhid.h

@@ -96,7 +96,7 @@ struct usbhid_device {
 };
 
 #define	hid_to_usb_dev(hid_dev) \
-	container_of(hid_dev->dev.parent->parent, struct usb_device, dev)
+	to_usb_device(hid_dev->dev.parent->parent)
 
 #endif