You don't have to do anything, but since an 808 kick drum has a pretty clearly discernible pitch, it can sound a bit off if you don't tune it to match your song's key. Whether or not it's the root of your chords is your choice, of course.
You can combine the 808 kick with other types of kick drums, and that's what people often do. Again, you don't have to play it like that, but you can.