arm64: dts: mediatek: mt8195: Add temperature mitigation threshold

The mt8195 SoC has several hotspots around the CPUs. Specify the
targeted temperature threshold when to apply the mitigation and define
the associated cooling devices.

Signed-off-by: Balsam CHIHI <bchihi@baylibre.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20230209105628.50294-7-bchihi@baylibre.com


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