ARM: dts: msm: Add default thermal zone rules for SDM660

Add default thermal zone rules similar to cpu frequency mitigation.
Move thermal zone parameters from user space app thermal-engine to
kernel dtsi as per kernel 4.14 requirement.

Change-Id: I91778677d88a36805a09a07dec960330f1c73ee9
Signed-off-by: Asha Magadi Venkateshamurthy <amagad@codeaurora.org>