Well, we safely can omit the last "p" to make it "span". span0 looks fine to me. ;-)
That is not so bad. A quick google search for "span linux" found:
http://www.irisa.fr/lande/genet/span/
which appears to be a user space tool to draw message sequence charts. Its a French university project. It would be polite to ask if they mind having a linux kernel module with the same name, just in case they claim some sort of trademark.
Are you suggesting a mass rename: In the kernel module sources batman or batman-adv becomes span?
Andrew