arm64: dts: mediatek: mt8186: Wire up CPU frequency/voltage scaling

This adds clocks, dynamic power coefficients, and OPP tables for the CPU
cores, so that everything required at the SoC level for CPU freqency and
voltage scaling is available.

Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20230609072906.2784594-3-wenst@chromium.org


Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>