Change tetheroffloadjni to tetheringutilsjni

Rename tetheroffloadjni to tetheringutilsjni and move setupRaSocket
jni method from NetUtils into tetheringutilsjni.

Bug: 143195885
Test: -build, flash, boot
      -atest TetheringTests
      -Off/On hotspot with ipv6 upstream

Change-Id: Ib68eb6999bbe2d3ca97e68712f22b105311ef800
diff --git a/Tethering/Android.bp b/Tethering/Android.bp
index 08552cb..596f62f 100644
--- a/Tethering/Android.bp
+++ b/Tethering/Android.bp
@@ -45,9 +45,9 @@
 
 // Due to b/143733063, APK can't access a jni lib that is in APEX (but not in the APK).
 cc_library {
-    name: "libtetheroffloadjni",
+    name: "libtetherutilsjni",
     srcs: [
-        "jni/com_android_server_connectivity_tethering_OffloadHardwareInterface.cpp",
+        "jni/android_net_util_TetheringUtils.cpp",
     ],
     shared_libs: [
         "libcgrouprc",
@@ -87,7 +87,7 @@
         "libcgrouprc",
         "libnativehelper_compat_libc++",
         "libvndksupport",
-        "libtetheroffloadjni",
+        "libtetherutilsjni",
     ],
     resource_dirs: [
         "res",