hwmon: (ltc4282) fix copy paste on variable name

The struct hwmon_chip_info was named ltc2947_chip_info which is
obviously a copy paste leftover. Name it accordingly.

Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20250611-fix-ltc4282-repetead-write-v1-2-fe46edd08cf1@analog.com


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