dt-bindings: hwinfo: samsung,s5pv210-chipid: add S5PV210 ChipID

Document already used S5PV210 ChipID block.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220705154613.453096-2-krzysztof.kozlowski@linaro.org

Documentation/devicetree/bindings/hwinfo/samsung,s5pv210-chipid.yaml

+# SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/hwinfo/samsung,s5pv210-chipid.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Samsung S5PV210 SoC ChipID
+
+maintainers:
+  - Krzysztof Kozlowski <krzk@kernel.org>
+
+properties:
+  compatible:
+    const: samsung,s5pv210-chipid
+
+  reg:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    chipid@e0000000 {
+        compatible = "samsung,s5pv210-chipid";
+        reg = <0xe0000000 0x1000>;
+    };