Revert "msm_thermal: remove platform driver"

This reverts commit 705f7b32f714a4a7dab6aacae43a72e3400136c1.
thermal: Fix critical enable/disable bug from STOCK source
This fixes a critical bug which only allowed to disable the thermal guard
but not to re-enable it again. Once disabled the thermal guard would stay
off until rebooted. This allows to re-enable it again. (sysfs)

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

Conflicts:
	drivers/thermal/msm_thermal.c