[Cryptech Tech] new Novena I2C interface

[Randy Bush]

>> I will also look at the EIM code. Have you checked in the EIM
>> baseline in Cryptech so we can do cleanup and adaptations?
> 
> No, I'm still wrestling with bears^H^H^H^H^H figuring out what bits
> are relevant and working/workable. Bunnie directed us to
> novena-spi-romulator, but it looks like novena-sd-fpga might have more
> digestible...stuff.

i think joachim is suggesting that it would be good if our repo tracked
all hacks since we fork from bunnie's

randy