drivers: thermal: use zero C status as sensor value instead of min temp

The Zero C sensor reports TSENS controller min temperature as its
sensor value to the thermal framework. It requires a low trip
monitor governor in thermal framework to monitor cold
temperature condition.

Instead of min temp value, use TSENS Zero C interrupt status as
sensor value. It removes the need for cold trip monitoring
governor and uses the existing governors to monitor the cold trip
condition and trigger mitigation.

Change-Id: I8bc3a76c5868d679d5f057f8722306a5b8d3fc98
Signed-off-by: Manaf Meethalavalappu Pallikunhi <manafm@codeaurora.org>