vm/qemu: support VFs > 8
vm/qemu: support VFs > 8

Syzkaller currently only supports 8 (0-7) pass-through VFs.
Add support for VFs > 8 by incrementing the Device # and
resetting the VF # to zero when INDEX modulo 8 = zero.

Introduce "{{FN%8}}" to trigger this support.
Ex: vfio-pci,host=31:0a.{{FN%8}}

Signed-off-by: George Kennedy <66673a3890d047a711c4686eddff4263d9333584@oracle.com>

xairy/syzkaller,google/syzkaller,xairy/syzkaller,google/syzkaller,google/syzkaller,xairy/syzkaller,google/syzkaller,xairy/syzkaller,xairy/syzkaller,google/syzkaller,xairy/syzkaller,google/syzkaller,google/syzkaller,xairy/syzkaller