Add support for a new DAC

Hi, I'm not an expert and I'm sorry if this is the wrong place for thsi kind of requests.

I'm trying to add native DSD support for this integrated DAC/amplifier: https://www.mission.co.uk/778x/

Unfortunately, vendor is not collaborative. It should support up to 384kHz (PCM) and DSD256 and have a XMOS USB chip and a ESS Sabre32 ES9018K2M DAC chip.   I tried simply to add:    case USB_ID(0x2622, 0x0011): /* Mission 778X */ in the "switch" section under /* XMOS based USB DACs */ and it works with the DSD_U32_BE format (tried using MPD - Music Player Demo).

Is it possible to officially add this to source or do you need a request from OEM?

Thanks --