msm_thermal: 3-phase thermal throttling

This introduces 3-phase thermal throttling to the existing
msm_thermal driver (it now works more like thermald).
This also changes the sampling rate to check every second
for increased temperatures.
Additionally this adds clear thresholds for the 2 new tripping
points.

Signed-off-by: showp1984 <showp1984@gmail.com>
Signed-off-by: Zarboz <zarboz@gmail.com>