ACPI: thermal: Switch over to devres-based resource management

ACPI: thermal: Switch over to devres-based resource management

Switch over the ACPI thermal zone driver to devres-based resource
management by making the following changes:

 * Turn acpi_thermal_zone_free() into a devm action added from
   acpi_thermal_probe() after allocating the struct acpi_thermal object.

 * Rename acpi_thermal_unregister_thermal_zone() to
   acpi_thermal_zone_unregister(), add acpi_thermal_pm_queue flushing to
   it, and turn it into a devm action added by acpi_thermal_probe()
   after calling acpi_thermal_register_thermal_zone().

 * Use the newly introduced devm_acpi_install_notify_handler() for
   installing an ACPI notify handler.

 * Drop acpi_thermal_remove() that is not necessary any more.

No intentional functional impact.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://patch.msgid.link/3698719.iIbC2pHGDl@rafael.j.wysocki