audio_hal_interface: Pass effective peer mtu as parameter to setup_codec

Removes the dependency from audio_hal_interface to
  - btif_av_source_active_peer,
  - bta_av_co_get_peer_params,
  - bta_av_co_get_encoder_effective_frame_size

Bug: 365022887
Test: m com.android.btservices
Flag: EXEMPT, no logical change
Change-Id: Id548dac9990ff25a59eaa8dfed99f00bcf3682a8