Mandatory Biometrics - Framework (2/N)

Added a separate constant to track if mandatory biometrics requirements are being met

Flag: android.hardware.biometrics.Flags.FLAG_MANDATORY_BIOMETRICS
Test: atest PreAuthInfoTest BiometricServiceTest
Fixes: 339910180
Change-Id: I57518401bfc2b0bd0d9db999affffc4cea484130
7 files changed