The DisplayPort TX requires Info frame configuration to transmit multi-channel audio.
The Info frame contains the number of channels and its speaker mapping. The AXI4-Stream
TID signal should contain the Audio channel ID along with
audio data, based on the number of channels configured.
For multi-stream audio, secondary data packet ID in the Info
frame packet should match with the stream ID over the audio AXI4-Stream interface (TID[7:4]).