thermal: Add Tegra SOCTHERM thermal management driver

This adds support for the Tegra SOCTHERM thermal sensing and management
system found in the Tegra124 system-on-chip. This initial driver supports
temperature polling for four thermal zones.

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

diff --cc drivers/thermal/Kconfig
Simple merge

diff --cc drivers/thermal/Makefile
Simple merge

diff --cc drivers/thermal/tegra_soctherm.c
Simple merge