dt-bindings: phy: Convert hisilicon,hix5hd2-sata-phy to DT schema

Convert the HiSilicon HIX5HD2 SATA PHY binding to DT schema format. It's
a straight forward conversion.

Signed-off-by: Rob Herring (Arm) <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Vinod Koul <[e-mail]>

Documentation/devicetree/bindings/phy/hisilicon,hix5hd2-sata-phy.yaml

···
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/phy/hisilicon,hix5hd2-sata-phy.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: HiSilicon hix5hd2 SATA PHY
+
+maintainers:
+  - Jiancheng Xue <[e-mail]>
+
+properties:
+  compatible:
+    const: hisilicon,hix5hd2-sata-phy
+
+  reg:
+    maxItems: 1
+
+  '#phy-cells':
+    const: 0
+
+  hisilicon,peripheral-syscon:
+    description: Phandle of syscon used to control peripheral
+    $ref: /schemas/types.yaml#/definitions/phandle
+
+  hisilicon,power-reg:
+    description: Offset and bit number within peripheral-syscon register controlling SATA power supply
+    $ref: /schemas/types.yaml#/definitions/uint32-array
+    items:
+      - description: Offset within peripheral-syscon register
+      - description: Bit number controlling SATA power supply
+
+required:
+  - compatible
+  - reg
+  - '#phy-cells'
+
+additionalProperties: false
+
+examples:
+  - |
+    phy@f9900000 {
+        compatible = "hisilicon,hix5hd2-sata-phy";
+        reg = <0xf9900000 0x10000>;
+        #phy-cells = <0>;
+        hisilicon,peripheral-syscon = <&peripheral_ctrl>;
+        hisilicon,power-reg = <0x8 10>;
+    };

Documentation/devicetree/bindings/phy/hix5hd2-phy.txt

···
-Hisilicon hix5hd2 SATA PHY
------------------------
-
-Required properties:
-- compatible: should be "hisilicon,hix5hd2-sata-phy"
-- reg: offset and length of the PHY registers
-- #phy-cells: must be 0
-Refer to phy/phy-bindings.txt for the generic PHY binding properties
-
-Optional Properties:
-- hisilicon,peripheral-syscon: phandle of syscon used to control peripheral.
-- hisilicon,power-reg: offset and bit number within peripheral-syscon,
-	register of controlling sata power supply.
-
-Example:
-	sata_phy: phy@f9900000 {
-		compatible = "hisilicon,hix5hd2-sata-phy";
-		reg = <0xf9900000 0x10000>;
-		#phy-cells = <0>;
-		hisilicon,peripheral-syscon = <&peripheral_ctrl>;
-		hisilicon,power-reg = <0x8 10>;
-	};