Add logging for Biometrics

Bug: 117060268
Bug: 120161047

Test: With LoggableMonitor DEBUG turned on, manually tested and checked
      logs

Change-Id: Ib8b3ec9ed7913e38b17597ac7eda535925e1576a
diff --git a/services/core/java/com/android/server/biometrics/EnumerateClient.java b/services/core/java/com/android/server/biometrics/EnumerateClient.java
index df6220c..0f57f48 100644
--- a/services/core/java/com/android/server/biometrics/EnumerateClient.java
+++ b/services/core/java/com/android/server/biometrics/EnumerateClient.java
@@ -19,6 +19,7 @@
 import android.content.Context;
 import android.hardware.biometrics.BiometricAuthenticator;
 import android.hardware.biometrics.BiometricConstants;
+import android.hardware.biometrics.BiometricsProtoEnums;
 import android.os.IBinder;
 import android.os.RemoteException;
 import android.util.Slog;
@@ -38,6 +39,11 @@
     }
 
     @Override
+    protected int statsAction() {
+        return BiometricsProtoEnums.ACTION_ENUMERATE;
+    }
+
+    @Override
     public int start() {
         // The biometric template ids will be removed when we get confirmation from the HAL
         try {