dt-bindings: thermal: brcm,avs-ro: reference thermal-sensor schema

Device is a thermal sensor and it requires '#thermal-sensor-cells', so
reference the thermal-sensor.yaml to simplify it and bring the
common definition of '#thermal-sensor-cells' property.
Acked-by: Florian Fainelli <florian.fainelli@broadcom.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20240705-dt-bindings-thermal-allof-v1-4-554061b52fbc@linaro.orgSigned-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>

Documentation/devicetree/bindings/thermal/brcm,avs-ro-thermal.yaml

@@ -19,19 +19,19 @@ description: |+
   Refer to the bindings described in
   Documentation/devicetree/bindings/mfd/syscon.yaml
 
+$ref: thermal-sensor.yaml#
+
 properties:
   compatible:
     const: brcm,bcm2711-thermal
 
-  # See Documentation/devicetree/bindings/thermal/thermal-sensor.yaml for details
   "#thermal-sensor-cells":
     const: 0
 
 required:
   - compatible
-  - '#thermal-sensor-cells'
 
-additionalProperties: false
+unevaluatedProperties: false
 
 examples:
   - |