Prevent a remote device from doing a Bluetooth Impersonation Attack
(BIAS) by:
- Preventing remote device to downgrade secure connection
feature mask. Secure connection feature mask should remain same or
increase to enabled in link key generation and authentication.
- Doing a mutual authentication during Legacy Authentication.
Signed-off-by: Chinmay Chhajed <chinmay.chhajed@espressif.com>
1. Bugfix for AG audio crash (change the return position)
2. Fix the error macro name and error return in hfp_hf demo
3. Fix the annotation error using UTF-8 ' (from Github)
4. Change or remove the log in SCO related code region.
5. Correct error of introduction of a function.
