Merge tag 'android-security-10.0.0_r53' into int/10/fp2

Android security 10.0.0 release 53

* tag 'android-security-10.0.0_r53':
  Make mIsDeviceLockedForUser synchronized.
  Add permission check on onKeyguardVisibilityChanged
  Encrypt AES-256 keystore master keys.

Change-Id: I913fedc4146b84a02a92737e4868320be579ab8a