Import the MdnsConstants and MdnsRecord

Fix the cherry-pick build issue by partially cherry-pick the import
statement.

Bug: 285261577
Test: m
Merged-In: I7c10878129663549c9171c1420b6f399930df2cb
Change-Id: I84e8a253afd09869620ab5ecc39256be3bec1b05
diff --git a/service-t/src/com/android/server/connectivity/mdns/util/MdnsUtils.java b/service-t/src/com/android/server/connectivity/mdns/util/MdnsUtils.java
index 4ba4e6d..5413956 100644
--- a/service-t/src/com/android/server/connectivity/mdns/util/MdnsUtils.java
+++ b/service-t/src/com/android/server/connectivity/mdns/util/MdnsUtils.java
@@ -21,6 +21,9 @@
 import android.net.Network;
 import android.os.Handler;
 
+import com.android.server.connectivity.mdns.MdnsConstants;
+import com.android.server.connectivity.mdns.MdnsRecord;
+
 import java.nio.ByteBuffer;
 import java.nio.CharBuffer;
 import java.nio.charset.Charset;