arm64: dts: microchip: sparx5: correct CPU address-cells

There is no reason for CPU node #address-cells to be set at 2, so lets
change them to 1 and update the reg property accordingly.

Signed-off-by: Robert Marko <robert.marko@sartura.hr>
Link: https://lore.kernel.org/r/20230221105039.316819-2-robert.marko@sartura.hr


Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>