iio: light: cm32181: Add mod_devicetable.h and remove of_match_ptr

Enables probing via the ACPI PRP0001 route but more is mosty about
removing examples of this that might get copied into new drivers.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Alexandru Ardelean <alexandru.ardelean@analog.com>