Hi Rajeshkumar,
As far as i know, ADV7180 Linux driver is not supported by default for DM8168 platform, you will have to support for this driver, This requires connecting DM8168 master driver with the ADV7180 subdev slave driver. it is simple but if it is not connected, it will not work. You could get an example of this by looking into TVP7002 driver and how it is connected to DM8168 driver.
Rgds,
Brijesh