Hmmm, good idea. If Amazon did not disable this function in the Kernel it would be just a matter of finding a Ice Cream Sandwich USB apk and probably a couple of libs
I spent about 30 minutes trying to find this on Google without any luck. I have another idea! I have ordered the new Samsung Tablet which runs ICS, when it arrives I will take a peek in the system to see if I can find these files.
I will post my follow up in about 1 week.