[dts] [PATCH V1] tests/TestSuite_iavf_fdir:the error info changes no such device to invaild port

[Tu, Lijuan]

> > run command with invalid port 'flow flush 2', the error info changes
> > no such device to invaild port.
> >
> > Signed-off-by: Xie wei <weix.xie at intel.com>
> Acke-by: Lihong Ma<lihongx.ma at intel.com>

Applied