Add support for TrueRNG USB TRNG
Originally created by @ankou on #7792 (Redmine)
Please investigate adding support for TrueRNG, a new low cost USB TRNG that is actually available for purchase. http://ubld.it/products/truerng-hardware-random-number-generator/
This should include a modification of udev rules and the addition of rng-tools. Adding a modern version of rngd will have the side benefits of adding support for RDRAND and other hw_random provided TRNGs.
Due to the Snowden controversy surrounding “closed” TRNGs a persistent option may be bebeficial to disable support for RDRAND, Via padlock, TPM, etc. for those who distrust them.