arm64: dts: mediatek: mt8365: drop incorrect power-domain-cells

The top SCPSYS node is not a power domain provider.  It's child
"power-controller" is instead.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20240612092421.52917-1-krzysztof.kozlowski@linaro.org


Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>