hwmon: (powerz) add support for ChargerLAB KM002C

The KM002C is similar to the KM003C and seems to use the same
protocol and firmware.

Reported-by: Douglas Gilbert <dgilbert@interlog.com>
Closes: https://lore.kernel.org/lkml/290ebce4-54f0-8ac1-2a13-cbc806d80d64@interlog.com/


Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Link: https://lore.kernel.org/r/20230911-powerz-km002c-v1-1-898bd79b9bae@weissschuh.net


Signed-off-by: Guenter Roeck <linux@roeck-us.net>