ACPI: thermal: Fix acpi_thermal_unregister_thermal_zone() cleanup

The acpi_thermal_unregister_thermal_zone() is paired with
acpi_thermal_register_thermal_zone() so it should mirror it.  It should
clean up all the resources that the register function allocated and
leave the stuff that was allocated elsewhere.

Unfortunately, it doesn't call thermal_zone_device_disable().  Also it
calls kfree(tz->trip_table) when it shouldn't.  That was allocated in
acpi_thermal_add().  Putting the kfree() here leads to a double free
in the acpi_thermal_add() clean up function.

Likewise, the acpi_thermal_remove() should mirror acpi_thermal_add() so
it should have an explicit kfree(tz->trip_table) as well.

Fixes: ec23c1c4 ("ACPI: thermal: Use trip point table to register thermal zones")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>