thermal: tsens: Add notification to thermal trip handler

Thermal framework needs to be notified when a threshold
interrupt occurs to enable it to update thresholds. Add
notification to thermal framework trip handler in tsens1xxx
IRQ handler.

Change-Id: Ic6651d449aff72daa7ebe7990698a8b16fafa313
Signed-off-by: Jishnu Prakash <jprakash@codeaurora.org>