ARM: dts: msm: Add default thermal zone rules for MSM8937/SDM439

Add default thermal zone rules like cpu frequency mitigation, gpu
mitigation, core isolate mitigation, vdd restriction at cold
temperature etc. for MSM8937/SDM439.

Change-Id: I1d07d1770afaa207c38ed960ceb7c26fd7d03d3f
Signed-off-by: Manaf Meethalavalappu Pallikunhi <manafm@codeaurora.org>