dt-bindings: thermal: nvidia,tegra186-bpmp: 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: Conor Dooley <[e-mail]>
Signed-off-by: Krzysztof Kozlowski <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Daniel Lezcano <[e-mail]>

Documentation/devicetree/bindings/thermal/nvidia,tegra186-bpmp-thermal.yaml

···
   node. See ../firmware/nvidia,tegra186-bpmp.yaml for details of the
   BPMP binding.
 
-  This node represents a thermal sensor. See
-
-    Documentation/devicetree/bindings/thermal/thermal-sensor.yaml
-
-  for details of the core thermal binding.
+$ref: thermal-sensor.yaml#
 
 properties:
   compatible:
···
       - nvidia,tegra194-bpmp-thermal
 
   '#thermal-sensor-cells':
-    $ref: /schemas/types.yaml#/definitions/uint32
-    description: Number of cells needed in the phandle specifier to
-      identify a given sensor. Must be 1 and the single cell specifies
-      the sensor index.
     const: 1
 
-additionalProperties: false
+unevaluatedProperties: false