dt-bindings: power: Add bindings document for Charger support on MT6360 PMIC

Add bindings document for Charger support on MT6360 PMIC
Signed-off-by: Gene Chen <gene_chen@richtek.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>

Documentation/devicetree/bindings/power/supply/mt6360_charger.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/power/supply/mt6360_charger.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Battery charger driver for MT6360 PMIC from MediaTek Integrated.
+
+maintainers:
+  - Gene Chen <gene_chen@richtek.com>
+
+description: |
+  This module is part of the MT6360 MFD device.
+  Provides Battery Charger, Boost for OTG devices and BC1.2 detection.
+
+properties:
+  compatible:
+    const: mediatek,mt6360-chg
+
+  richtek,vinovp-microvolt:
+    description: Maximum CHGIN regulation voltage in uV.
+    enum: [ 5500000, 6500000, 11000000, 14500000 ]
+
+
+  usb-otg-vbus-regulator:
+    type: object
+    description: OTG boost regulator.
+    $ref: /schemas/regulator/regulator.yaml#
+
+required:
+  - compatible
+
+additionalProperties: false
+
+examples:
+  - |
+    mt6360_charger: charger {
+      compatible = "mediatek,mt6360-chg";
+      richtek,vinovp-microvolt = <14500000>;
+
+      otg_vbus_regulator: usb-otg-vbus-regulator {
+        regulator-compatible = "usb-otg-vbus";
+        regulator-name = "usb-otg-vbus";
+        regulator-min-microvolt = <4425000>;
+        regulator-max-microvolt = <5825000>;
+      };
+    };
+...