le_audio_offload: Support two sources for conversational

Tag: #feature
Bug: 241775706
Test: atest VtsHalBluetoothAudioTargetTest
Change-Id: I1bc59d09ec2ad3a8e65712c2fa099e806cce3c2d
Merged-In: I1bc59d09ec2ad3a8e65712c2fa099e806cce3c2d
(cherry picked from commit 51f165b314fb40b6a58007a81e707734a211f11f)
1 file changed