Re: [libvirt] [PATCH v6 04/14] qemu: Add check for iothread attribute in validate controller

Let's make sure that non SCSI virtio-scsi isn't used for any type other than a virtio-scsi controller.

This includes removing the check from qemuCheckSCSIControllerIOThreads which is a very suble difference because although def->model was used in the original comparison and just @model is used in the new comparison, the comparison is the same. This is because qemuDomainSetSCSIControllerModel doesn't change the def->model, thus we know that the resultant @model would result in either the same as input or if not set, whatever the default model is when def->model == -1. In this second case, virtio-scsi is the last default chosen.