VIRTIO_PCI should properly depend on CONFIG_PCI.
With this change, we can switch off pci for s390x by removing
'CONFIG_PCI=y' from the default config.
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
