reset: MedaiTek: add reset controller driver for MediaTek SoCs

This patch adds reset controller driver for MediaTek SoCs.

diff --git a/include/dt-bindings/reset/mtk-reset.h b/include/dt-bindings/reset/mtk-reset.h
new file mode 100644
index 0000000..5f0a74f
--- /dev/null
+++ b/include/dt-bindings/reset/mtk-reset.h
@@ -0,0 +1,18 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2018 MediaTek Inc.
+ */
+
+#ifndef _DT_BINDINGS_MTK_RESET_H_
+#define _DT_BINDINGS_MTK_RESET_H_
+
+/* ETHSYS */
+#define ETHSYS_PPE_RST			31
+#define ETHSYS_EPHY_RST			24
+#define ETHSYS_GMAC_RST			23
+#define ETHSYS_ESW_RST			16
+#define ETHSYS_FE_RST			6
+#define ETHSYS_MCM_RST			2
+#define ETHSYS_SYS_RST			0
+
+#endif /* _DT_BINDINGS_MTK_RESET_H_ */