I googled around for "i810_rng"; there's actually a few threads here on linuxquestions.org about it. It seems to be a random number generator for some Intel motherboards.
suggests that you edit your /etc/hotplug/blacklist file and list your unwanted module there. (Although the thread discusses the i810 audio module, the same principle should apply to the i810_rng module). This seems to be a sensible option to try, since it's easily reversible.
The other option is to recompile your kernel, but that effort is probably not worth it.
Thanks for your question; I didn't know about /etc/hotplug/blacklist before.