hwmon: emc2305: Add OF support

Introduce OF support for Microchip emc2305 pwm fan controller.

Signed-off-by: Florin Leotescu <florin.leotescu@nxp.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Link: https://lore.kernel.org/r/20250321143308.4008623-3-florin.leotescu@oss.nxp.com


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