Update gstomx.conf
Update gstomx.conf

changes meet hisilicon's requirement
caps-liu/gst-omx-1.0.0,caps-liu/gst-omx-1.0.0,caps-liu/gst-omx-1.0.0,caps-liu/gst-omx-1.0.0,IoTGateway/gst-omx-1.0.0,IoTGateway/gst-omx-1.0.0,IoTGateway/gst-omx-1.0.0,IoTGateway/gst-omx-1.0.0