[coreboot] VT-d support

[Nico Huber]

On 05.06.2017 19:47, Zoran Stojsavljevic wrote:
>> If you are lucky, you only need to add 20~30 lines to your chipset's code.
> 
> Could you, please, show us an explicit example (of these 20 to 30 lines of
> code)?!

`src/northbridge/intel/sandybridge/iommu.c` and acpi_fill_dmar() in
`src/northbridge/intel/sandybridge/acpi.c`.

Nico