regulator: mt6380: Add support for MT6380

The MT6380 is a regulator found those boards with MediaTek MT7622 SoC
It is connected as a slave to the SoC using MediaTek PMIC wrapper which
is the common interface connecting with Mediatek made various PMICs.

Signed-off-by: Chenglin Xu <chenglin.xu@mediatek.com>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

include/linux/regulator/mt6380-regulator.h

@@ -0,0 +1,32 @@
+/*
+ * Copyright (c) 2017 MediaTek Inc.
+ * Author: Chenglin Xu <chenglin.xu@mediatek.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __LINUX_REGULATOR_mt6380_H
+#define __LINUX_REGULATOR_mt6380_H
+
+enum {
+	MT6380_ID_VCPU = 0,
+	MT6380_ID_VCORE,
+	MT6380_ID_VRF,
+	MT6380_ID_VMLDO,
+	MT6380_ID_VALDO,
+	MT6380_ID_VPHYLDO,
+	MT6380_ID_VDDRLDO,
+	MT6380_ID_VTLDO,
+	MT6380_ID_RG_MAX,
+};
+
+#define MT6380_MAX_REGULATOR	MT6380_ID_RG_MAX
+
+#endif /* __LINUX_REGULATOR_mt6380_H */