hwmon: (pmbus/max15301) Add support for MAX15303

The MAX15303 is a full-featured, flexible, efficient, 6A digital
point-of-load (PoL) controller with integrated switching MOSFETs. It
contains advanced power management and telemetry features.

Tested-by: Robin Getz <rgetz503@gmail.com>
Signed-off-by: Nuno Sa <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20250108-dev-max15303-v1-1-9154eb2c9d9e@analog.com


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