arm64: dts: qcom: sdm630: Add thermal-zones configuration

Add a basic thermal-zones configuration to make sure the SoC
doesn't overheat itself to death.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@somainline.org>
Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Link: https://lore.kernel.org/r/20210728222542.54269-17-konrad.dybcio@somainline.org


[bjorn: Sorted thermal-zones below "soc"]
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>