Adding VIRTIO to the multi_v7_defconfig

[Arnd Bergmann]

On Sunday 29 November 2015 14:56:53 Peter Crosthwaite wrote:
> 
> So minimally I am looking for:
> 
> CONFIG_VIRTIO_PCI=y"
> CONFIG_VIRTIO_BLK=y"
> CONFIG_VIRTIO_NET=y"
> 
> As that gets you booted with network without needing initrd. I guess
> the rest of VIRTIO makes more sense as modules as follow up work?

Sounds reasonable to me, though we could debate about VIRTIO_NET.
If nobody else objects, just make it built-in.

	Arnd