hwmon: Use non-OF thermal cooling device registration API

hwmon: Use non-OF thermal cooling device registration API

Some HWMON drivers register cooling devices using the OF helper
devm_thermal_of_cooling_device_register() with a NULL device node.

With the introduction of a dedicated non-OF registration API,
switch these users to devm_thermal_cooling_device_register()
to make the intent explicit and avoid relying on OF-specific helpers.

This is a pure refactoring with no functional change.

Signed-off-by: Daniel Lezcano <daniel.lezcano@oss.qualcomm.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@kernel.org>
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Rafael J. Wysocki (Intel) <rafael@kernel.org>
Link: https://patch.msgid.link/20260526140802.1059293-15-daniel.lezcano@oss.qualcomm.com