hwmon: (f71882fg) fix checkpatch issues

fixed:
WARNING: static const char * array should probably be static const char * const
+static const char *f71882fg_names[] = {

Signed-off-by: Frans Meulenbroeks <fransmeulenbroeks@gmail.com>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>