The Linux Way is to return -ENOIOCTLCMD to the vfs when an
unimplemented ioctl is requested.  Do this in kvm_mips instead of a
random mixture of -ENOTSUPP and -EINVAL.
Signed-off-by: NDavid Daney <david.daney@cavium.com>
Acked-by: NSanjay Lal <sanjayl@kymasys.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>