Up until now we've probed machine type properties, along with
properties for other types, in virQEMUCapsProbeQMPDevices(), but
soon we're going to need some logic that is specific to machine
types and as such wouldn't quite fit into that function.
Signed-off-by: NAndrea Bolognani <abologna@redhat.com>
Reviewed-by: NPavel Hrdina <phrdina@redhat.com>