arm64: qcom: sc7180: trogdor: Add ADC nodes and thermal zone for charger thermistor

Trogdor has a thermistor to monitor the temperature of the charger IC.
Add the ADC (monitor) nodes and a thermal zone for this thermistor.

Signed-off-by: Antony Wang <antony_wang@compal.corp-partner.google.com>
[mka: tweaked commit message]
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Link: https://lore.kernel.org/r/20201030084840.1.If389f211a8532b83095ff8c66ec181424440f8d6@changeid


Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>