[PATCH 1/3][v2] Thermal: initialize thermal zone device correctly

From: Zhang Rui After thermal zone device registered, as we have not read any temperature before, thus tz->temperature should not be 0, which actually means 0C, and thermal trend is not available. In this case, we need specially handling for the first thermal_zone_device_update(). Both thermal

[PATCH 1/3][v2] Thermal: initialize thermal zone device correctly

From: Zhang Rui After thermal zone device registered, as we have not read any temperature before, thus tz->temperature should not be 0, which actually means 0C, and thermal trend is not available. In this case, we need specially handling for the first