arm64: dts: renesas: Fix thermal bindings

The binding node names for the thermal zones are not successfully
validated by the dt-schemas.

Fix the validation by changing from sensor-thermalN or thermal-sensor-N
to sensorN-thermal.  Provide node labels of the form sensorN_thermal to
ensure consistency with the other platform implementations.

Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Link: https://lore.kernel.org/r/20211104224033.3997504-1-kieran.bingham+renesas@ideasonboard.com


Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>