Merge "Handle case where NN AIDL callback is null in IDevice::prepareModel*"...

Merge "Handle case where NN AIDL callback is null in IDevice::prepareModel*" am: 5d4f1b70 am: 84ec222e am: aa9f97a0 am: b67524d4 am: 3c1ea74a

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2072333



Change-Id: Idf3b9fd0b65e921ec5c14981707833f8f518a828
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>