[coreboot] RISC-V HiFive Unleashed board added to coreboot - has PCI-e slots via exp board

[Rudolf Marek]

Hi,

Lets do some speculation that some off the shelf DDR memory controller is used.

Maybe it could be same as the RockChip aka Denali High-Speed DDR PHY IP from Cadence?
It has also some "interrupt status" bits and such and "bstlen" which sounds same as the few 
regs named as the documentation.

Thanks
Rudolf