dt-bindings: phy: Convert qca,ar7100-usb-phy to DT schema

Convert the Qualcomm-Atheros AR7100 USB 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/phy-ath79-usb.txt

···
-* Atheros AR71XX/9XXX USB PHY
-
-Required properties:
-- compatible: "qca,ar7100-usb-phy"
-- #phys-cells: should be 0
-- reset-names: "phy"[, "suspend-override"]
-- resets: references to the reset controllers
-
-Example:
-
-	usb-phy {
-		compatible = "qca,ar7100-usb-phy";
-
-		reset-names = "phy", "suspend-override";
-		resets = <&rst 4>, <&rst 3>;
-
-		#phy-cells = <0>;
-	};

Documentation/devicetree/bindings/phy/qca,ar7100-usb-phy.yaml

···
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/phy/qca,ar7100-usb-phy.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Atheros AR71XX/9XXX USB PHY
+
+maintainers:
+  - Alban Bedel <[e-mail]>
+
+properties:
+  compatible:
+    items:
+      - const: qca,ar7100-usb-phy
+
+  reset-names:
+    description: Names of reset lines in order.
+    minItems: 1
+    items:
+      - const: phy
+      - const: suspend-override
+
+  resets:
+    description: References to the reset controllers.
+    minItems: 1
+    items:
+      - description: Reset controller for phy
+      - description: Reset controller for suspend-override
+
+  '#phy-cells':
+    const: 0
+
+required:
+  - compatible
+  - reset-names
+  - resets
+  - '#phy-cells'
+
+additionalProperties: false
+
+examples:
+  - |
+    usb-phy {
+        compatible = "qca,ar7100-usb-phy";
+        reset-names = "phy", "suspend-override";
+        resets = <&rst 4>, <&rst 3>;
+        #phy-cells = <0>;
+    };

MAINTAINERS

···
 S:	Maintained
 W:	https://github.com/AlbanBedel/linux
 T:	git git://github.com/AlbanBedel/linux
-F:	Documentation/devicetree/bindings/phy/phy-ath79-usb.txt
+F:	Documentation/devicetree/bindings/phy/qca,ar7100-usb-phy.yaml
 F:	drivers/phy/qualcomm/phy-ath79-usb.c
 
 ATHEROS ATH GENERIC UTILITIES