le_audio: Add two source requirements for conversational context am: 64347dfe

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/modules/Bluetooth/+/17618242



Change-Id: I7dcdba1befebb9eec2b1055a0b5950c9b5b2f9ad
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>