thermal: int340x: processor_thermal: support acpi notification

BIOS/EC can change PPCC element dynamically and inform OS about the change.
When this driver receives notification, it will read PPCC element again.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>