LE audio hardware offload: audio configuration update

The patch including:
1. Gathering all the information needed by hardware offload
2. Update the audio configuration as the remote device ready to stream
3. The offloader could get the callback as config changed and then get
the audio config before processing the audio data without session
restarted

Bug: 197296692
Bug: 150670922
Test: Verify LE audio hardware offload with HAL 2.2 for media
Change-Id: I490cb2c6db6aebc182c2556513eb5e11551604c9