thermal: msm: Update TSENS for 8960_V2

TSENS V2 supports reading from multiple sensors and
notifiying clients when the lower/upper thresholds
are reached. The lower/upper threshold use the last
sensors threshold that are set through the thermal sysfs.
TSENS HW is enabled only when the main sensor is requested.
The TSENS block is disabled if the main senors is disabled
irrespective of any other sensors that are being enabled.
When TSENS receives notification on temperature threshold
being reached, it checks and sends events to the sensors
that are enabled and whose thresholds are above the upper
or below the lower thresholds set in the tsens threshold
register.

Signed-off-by: Siddartha Mohanadoss <smohanad@codeaurora.org>
Signed-off-by: David Brown <davidb@codeaurora.org>