hwmon: (pmbus/lm25066) Add OF device ID table

The driver doesn't have a struct of_device_id table but supported devices
are registered via Device Trees. This is working on the assumption that a
I2C device registered via OF will always match a legacy I2C device ID and
that the MODALIAS reported will always be of the form i2c:<device>.

But this could change in the future so the correct approach is to have an
OF device ID table if the devices are registered via OF.

Signed-off-by: Zev Weiss <zev@bewilderbeest.net>
Link: https://lore.kernel.org/r/20210928092242.30036-7-zev@bewilderbeest.net


[groeck: Replaced reference to reasoning with reasoning, fixed checkpatch
 warnings, fixed compile warning comparing of_id->data w/ i2c_id->driver_data]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>