hw-mgmt: thermal: TC improve logging system

TC improve logging system
  1. Changed priorities for error/warning/notice messages
  2. Improvement logging to syslog for critical messages

This feature is a part of improve robustness initiated after bugfix #4494119

FR: 4532813

Signed-off-by: Oleksandr Shamray <[email protected]>

Author: sholeksandr