thermal/drivers/amlogic: Add support for secure monitor calibration readout

Some SoCs (e.g. T7) expose thermal calibration data through the secure
monitor rather than a directly accessible eFuse register. Add a use_sm
flag to amlogic_thermal_data to select this path, and retrieve the
firmware handle and tsensor_id from the "amlogic,secure-monitor" DT
phandle with one fixed argument.

Also introduce the amlogic,t7-thermal compatible using this new path.

While refactoring, fix a pre-existing bug where
amlogic_thermal_initialize() was called after
devm_thermal_of_zone_register(), causing the thermal framework to
read an uninitialized trim_info on zone registration.

Signed-off-by: Ronald Claveau <linux-kernel-dev@aliel.fr>
Signed-off-by: Daniel Lezcano <daniel.lezcano@kernel.org>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/20260424-add-thermal-t7-vim4-v5-4-9040ca36afe2@aliel.fr

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