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/common/config/Config.cpp b/biometrics/common/config/Config.cpp
index a13bdf0..49f7cc8 100644
--- a/biometrics/common/config/Config.cpp
+++ b/biometrics/common/config/Config.cpp
@@ -132,6 +132,7 @@
 }
 
 bool Config::setInternal(const std::string& name, const ConfigValue& val) {
+    LOG(INFO) << "Config::set " << name << " to " << toString(val);
     bool res = false;
     auto& data = mMap[name];
 
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;
 }