Dump fingerprint configurations on CLI dumpsys command

Bug: 326227403
Test: adb shell dumpsys android.hardware.biometrics.fingerprint.IFingerprint/virtual
Change-Id: I75e11b7baef3566411588ea5231f6336d271dc77
diff --git a/biometrics/fingerprint/aidl/default/Fingerprint.cpp b/biometrics/fingerprint/aidl/default/Fingerprint.cpp
index e407f17..3055da1 100644
--- a/biometrics/fingerprint/aidl/default/Fingerprint.cpp
+++ b/biometrics/fingerprint/aidl/default/Fingerprint.cpp
@@ -125,6 +125,8 @@
     }
     ::android::base::WriteStringToFd(mEngine->toString(), fd);
 
+    ::android::base::WriteStringToFd(Fingerprint::cfg().toString(), fd);
+
     fsync(fd);
     return STATUS_OK;
 }