Use JniUtil.getJniLibraryName to find library name

Bug: 205088391
Test: atest TetheringTests
      atest CtsTetheringTest
      atest TetheringPrivilegedTests
Change-Id: Ie865f6ef828a7a706ed76cafadc0403511a28cff
diff --git a/staticlibs/device/com/android/net/module/util/BpfMap.java b/staticlibs/device/com/android/net/module/util/BpfMap.java
index aa74152..5f05c7c 100644
--- a/staticlibs/device/com/android/net/module/util/BpfMap.java
+++ b/staticlibs/device/com/android/net/module/util/BpfMap.java
@@ -42,7 +42,7 @@
  */
 public class BpfMap<K extends Struct, V extends Struct> implements AutoCloseable {
     static {
-        System.loadLibrary("tetherutilsjni");
+        System.loadLibrary(JniUtil.getJniLibraryName(BpfMap.class.getPackage()));
     }
 
     // Following definitions from kernel include/uapi/linux/bpf.h