thermal: add sensor logging in thermalWatcherCallbackFunc

Bug: 151818536
Test: Log can be printed as below:
      I/android.hardware.thermal@2.0-service.pixel(  889): skin-therm-monitor: 50

Change-Id: Iefd24ff48ead9c2da55640742abcb158e9b181c2
Signed-off-by: TeYuan Wang <kamewang@google.com>
(cherry picked from commit b250a1d2c119a37e643f738ce70511c9aed8c555)
1 file changed