hwmon: (nct6775-core) Explicitly initialize nct6775_device_names indexes

Changing the "kinds" enum start value to be 1-indexed instead of
0-indexed caused look-ups in nct6775_device_names[] to be misaligned or
off the end.

Initialize the string list with explicit indexes.

Cc: Rob Herring <robh@kernel.org>
Cc: Kees Cook <keescook@chromium.org>
Fixes: 10a0575e ("hwmon: nct6775-i2c: Use i2c_get_match_data()")
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>