audiopolicy: Optimize A2DP codec config change

Handle A2DP codec config change in audio HAL without
closing / re-opening outputs or invalidating streams
from AudioPolicyManager.

Bug: 79476124
Test: music playback over BT A2DP
Change-Id: I87263da32815a4d4f6273068ef0b2a5b93c73b75
3 files changed