thermal: tsens8974: Support calibrationless sensors

Enable TSENS for calibrationless mode. Previously the
temperature readings from non-calibrated sensors had
high accuracy errors which made it not desirable to
enable TSENS without calibration.

With support for calibrationless sensors the accuracy
of the temperature is within acceptable range to have
it enabled before support for one and two point calibration
is added. Calibrationless sensor uses default slope and
offset based on characterized chip data.

Change default initialization configuration for individual
and remote sensors.

Change-Id: I9186b135508e6a66d312a3862e511ff3e87e4ab6
Signed-off-by: Siddartha Mohanadoss <smohanad@codeaurora.org>