ARM: tegra: Add soctherm and thermal zones to Tegra124 device tree

This adds the soctherm thermal sensing and management unit to the
Tegra124 device tree along with the four thermal zones corresponding
to the four thermal sensors provided by soctherm.

Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>