dt-bindings: thermal: samsung,exynos: specify cells

All Samsung Exynos SoCs Thermal Management Units have only one sensor,
so make '#thermal-sensor-cells' fixed at 0.
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-v1-1-554061b52fbc@linaro.orgSigned-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>

Documentation/devicetree/bindings/thermal/samsung,exynos-thermal.yaml

@@ -61,7 +61,8 @@ properties:
           TRIMINFO at 0x10068000 contains data for TMU channel 2
     minItems: 1
 
-  '#thermal-sensor-cells': true
+  '#thermal-sensor-cells':
+    const: 0
 
   vtmu-supply:
     description: The regulator node supplying voltage to TMU.