Revert "msm_thermal 8x60: update to handle 3 points"

Resolve CPU freq issues

This reverts commit 68f2a947f5617fcd97b5e551163df0e744444c02.

Change-Id: I3aa5b6ac46c29504d45f91b75559bd16b7772a52
thermal: add msm_thermal kconfig to build it

Change-Id: I1e33ff9fb04fa60aab3747a1413cf4458f71fc80