hwmon: (emc1403) Convert to with_info API

Convert driver to register with the hwmon subsystem using
devm_hwmon_device_register_with_info() instead of
devm_hwmon_device_register_with_groups() to simplify the code
and to reduce its size. As side effect, this also fixes a couple
of overflow problems when writing limit and hysteresis registers.

Cc: Lars Petter Mostad <lars.petter.mostad@appear.net>
Tested-by: Lars Petter Mostad <lars.petter.mostad@appear.net>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>