Add init_flag for SCO LC3 codec am: f824cd30 am: 25772816

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/modules/Bluetooth/+/23389677



Change-Id: If8f862e689d6fb88e00c05a4e4d9880233a7796a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>