Add support for Airoha EN7581 thermal sensor. This provide support for
reading the CPU or SoC Package sensor and to setup trip points for hot
and critical condition. An interrupt is fired to react on this and
doesn't require passive poll to read the temperature.
The thermal regs provide a way to read the ADC value from an external
register placed in the Chip SCU regs. Monitor will read this value and
fire an interrupt if the trip condition configured is reached.
Signed-off-by: Christian Marangi <ansuelsmth@xxxxxxxxx>
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