Add validation on attr type and size in a2dp_api.cc am: c5bc4c49

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/modules/Bluetooth/+/24638582



Change-Id: Ib8f5226a085ef239a35f9a0aa6f78f76389160a3
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>