[coreboot] RFC: automatic mptable creation

[Rudolf Marek]

Hi all,

Sorry for the delay. I was busy with other stuff recently. I like it, just 
please note that ACPI requires to aggregate the _PRT objects under every PCI 
bridge device.

The root bridge has to have _PRT table (usually it contains routing for BUS 0). 
The other bridges (_PCI devices) contains aggregate _PRT routing entries for bus 
directly behind the bridge.

Plz check src/mainboard/asus/m2v-mx_se/dsdt.asl for details.

Thanks
Rudolf