[coreboot] Lenovo G505s AMD Hardware Virtualization

[Taiidan at gmx.com]

Congratulations for following through on the investigation :D

I am not sure how to do a commit, but I hope you are able to find out as 
you will have helped a lot of people.

I am pleased with myself for noticing that the lack of microcode updates 
was the issue - as the CPU is similar to a piledriver not a bulldozer it 
requires microcode for IOMMU.

I do not have the technical documents for that chipset and I do not know 
how to change the PCI regs but I am sure the USB controllers support FLR 
considering the nearly identical SR56xx chipsets usb controllers do - I 
will look in to this further.