msm: thermal: Use interruptible threads

Based on @cyanogen's and @myfluxi`s findings, use interruptible threads to reducecpu load.

Signed-off-by: Dan Trifan <jimsth@gmail.com>
arhc: arm: msm: Use interruptible threads

Based on @cyanogen's and @myfluxi`s findings, use
interruptible threads to reducecpu load.

Signed-off-by: Dan Trifan <jimsth@gmail.com>