thermal: msm8974: Default to calibrationless mode

Add devicetree binding property for TSENS to support
setting whether to use pre-characterized calibration
data or use the calibration data from the QFPROM.

Default to use calibration-less mode to enable TSENS
temperature monitoring.

Change-Id: I38a7ad591919e8a44329281d33f8746b87cf7d17
Signed-off-by: Siddartha Mohanadoss <smohanad@codeaurora.org>