thermal: qcom: tsens-8974: Add support for 8974 family of SoCs

Add .calibrate support for 8974 family as part of tsens_ops.

Based on the original code by Siddartha Mohanadoss and Stephen Boyd.

Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>