[Feature]add MT2731_MP2_MR2_SVN388 baseline version

Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/sound/usb/usx2y/usX2Yhwdep.h b/src/kernel/linux/v4.14/sound/usb/usx2y/usX2Yhwdep.h
new file mode 100644
index 0000000..457199b
--- /dev/null
+++ b/src/kernel/linux/v4.14/sound/usb/usx2y/usX2Yhwdep.h
@@ -0,0 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef USX2YHWDEP_H
+#define USX2YHWDEP_H
+
+int usX2Y_hwdep_new(struct snd_card *card, struct usb_device* device);
+
+#endif