Common Criteria mode: Make sure config checksum is encrypt correctly

* Encrypt bt_config file and bt_config backup file when recevied
encrypt bt_config file request from low layer.
* Encrypt bt_config file after the bt_stack shutdown.

Bug: 199679639
Test: atest BluetoothInstrumentationTests
Tag: #feature

Change-Id: Ia820b24007617c972729ba0c886fbf7e0407e2ca
2 files changed
tree: b18ba6503c947363a3dd04b4c33f6ee36689fd89
  1. android/