dt-bindings: clock: Convert marvell,armada-3700-tbg-clock to DT schema

Convert the Marvell Armada 3700 TBG clock binding to DT schema format.
It's a straight forward conversion.

Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://lore.kernel.org/r/20250521210826.61957-1-robh@kernel.org
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

Author: robherring

Documentation/devicetree/bindings/clock/armada3700-tbg-clock.txt

@@ -0,0 +1,54 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/marvell,armada-3700-tbg-clock.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Marvell Armada 3700 Time Base Generator Clock
+
+maintainers:
+  - Andrew Lunn <andrew@lunn.ch>
+  - Gregory Clement <gregory.clement@bootlin.com>
+
+description: >
+  Marvell Armada 37xx SoCs provide Time Base Generator clocks which are used as
+  parent clocks for the peripheral clocks.
+
+  The TBG clock consumer should specify the desired clock by having the clock ID
+  in its "clocks" phandle cell.
+
+  The following is a list of provided IDs and clock names on Armada 3700:
+
+    0 = TBG A P
+    1 = TBG B P
+    2 = TBG A S
+    3 = TBG B S
+
+properties:
+  compatible:
+    const: marvell,armada-3700-tbg-clock
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  '#clock-cells':
+    const: 1
+
+required:
+  - compatible
+  - reg
+  - '#clock-cells'
+
+additionalProperties: false
+
+examples:
+  - |
+    clock-controller@13200 {
+        compatible = "marvell,armada-3700-tbg-clock";
+        reg = <0x13200 0x1000>;
+        clocks = <&xtalclk>;
+        #clock-cells = <1>;
+    };