hwmon: (scpi-hwmon): Use of_device_get_match_data()

Use of_device_get_match_data() to simplify the code.

Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Minghao Chi <chi.minghao@zte.com.cn>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Link: https://lore.kernel.org/r/20220315023412.2118415-1-chi.minghao@zte.com.cn


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