thermal: tsens: Add MTC and sysfs support for sensors

Multi-Zone Temperature Control (MTC) provides an interface to
clients to enable or disable thresholds for supported zone of sensors
and to get log of recent commands. Create sysfs nodes to access
MTC tsens.

Change-Id: Ic407066e5e19dfa58fc44afb50e0f08cf350dc91
Signed-off-by: Rama Krishna Phani A <rphani@codeaurora.org>