arm64: dts: mediatek: mt8183-evb: Add node for thermistor

Add node to be able to read the temperature for the thermistor
connected to AUXIN0.

Signed-off-by: Fabien Parent <fparent@baylibre.com>
Link: https://lore.kernel.org/r/20211110192631.4182485-1-fparent@baylibre.com


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