qemuxml2argvtest: Use other bus capability for 'non-x86_64-timer-error' case
qemuxml2argvtest: Use other bus capability for 'non-x86_64-timer-error' case

Give the test QEMU_CAPS_CCW instead of QEMU_CAPS_VIRTIO_S390 since the
latter can never be asserted any more. This preserves what the tests
wants to check so that QEMU_CAPS_VIRTIO_S390 can be removed.

Signed-off-by: Peter Krempa <2cf5c04c61aa466e4a47bfedc747d17279c72ffc@redhat.com>
Reviewed-by: Ján Tomko <4cab11cfb98d3c937327354a78eb07dbb6ee2bc6@redhat.com>

zippy2/libvirt,olafhering/libvirt,nertpinx/libvirt,nertpinx/libvirt,zippy2/libvirt,crobinso/libvirt,jfehlig/libvirt,libvirt/libvirt,libvirt/libvirt,jfehlig/libvirt,zippy2/libvirt,crobinso/libvirt,nertpinx/libvirt,olafhering/libvirt,crobinso/libvirt,olafhering/libvirt,jfehlig/libvirt,olafhering/libvirt,libvirt/libvirt,jfehlig/libvirt,nertpinx/libvirt,nertpinx/libvirt,crobinso/libvirt,libvirt/libvirt,zippy2/libvirt