Add a important fix to video detection. For some reason on 10.x Xorg isn't detecting
video cards with difference BusID settings... This causes chaos when the board
is on a weird pci device, or has multiple video devices installed.

Now we will first probe for vgapci0, and setup an xorg.conf based upon that using
the correct BusID value.

If that fails, we will then test vgapci1, and lastly fallback to vesa mode