bhyve graphics support

[Yamagi Burmeister]

> > > grub-bhyve -m device.map -r hd0,msdos1 -M 4G ubuntu
> > > ~lars/dev/bhyve_graphics/bhyve \
> > >     -s 0:0,hostbridge \
> > >     -s 1:0,lpc \
> > >     -s 2:0,virtio-net,tap1 \
> > >     -s 3:0,virtio-blk,./ubuntu-hd.img \
> > >     -s 11,fbuf,tcp=0.0.0.0:5900,w=1280,h=720,wait \
> > >     -s 20,xhci,tablet \
> > >     -l bootrom,/home/lars/dev/bhyve_graphics/BHYVE_UEFI_20160526.fd \
> > >     -c 4 \
> > >     -m 4G \
> > >     ubuntu

As far as I know UEFI supports ahci-* boot devices only. For the basic
UEFI support without GOP the AHCI devices needed to be mapped on slot 3
and 4. I don't know if that's still the case.

I've got working VNC access to a FreeBSD 10.3 VM. My Windows 7 install
disc starts up, but the mouse is not working. Keystrokes through VNC 
give "atkbd data buffer full" errors. I'll open a new thread for that
if I can't figure it out.

Regards,
Yamagi

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