Copy libnetdbpf from system/net to tethering module

This is a clean copy (that can't build). Modifications will be in
followed commits.

Bug: 202086915
Test: $ diff -r
      packages/modules/Connectivity/service-t/native/libs/libnetdbpf/
      system/netd/libnetdbpf/
      (no different)
No-Typo-Check: Clean move
Change-Id: I23aad26d487b4d99e24ffecf79eeef3f8eea664b
diff --git a/service-t/native/libs/libnetdbpf/Android.bp b/service-t/native/libs/libnetdbpf/Android.bp
new file mode 100644
index 0000000..d586d68
--- /dev/null
+++ b/service-t/native/libs/libnetdbpf/Android.bp
@@ -0,0 +1,63 @@
+//
+// Copyright (C) 2017 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+package {
+    // See: http://go/android-license-faq
+    // A large-scale-change added 'default_applicable_licenses' to import
+    // all of the 'license_kinds' from "system_netd_license"
+    // to get the below license kinds:
+    //   SPDX-license-identifier-Apache-2.0
+    default_applicable_licenses: ["system_netd_license"],
+}
+
+cc_library {
+    name: "libnetdbpf",
+    vendor_available: false,
+    host_supported: false,
+    header_libs: ["bpf_connectivity_headers"],
+    srcs: [
+        "BpfNetworkStats.cpp"
+    ],
+    shared_libs: [
+        "libbase",
+        "liblog",
+        "libnetdutils",
+    ],
+    export_include_dirs: ["include"],
+    defaults: ["netd_defaults"],
+    sanitize: {
+        cfi: true,
+    },
+}
+
+cc_test {
+    name: "libnetdbpf_test",
+    test_suites: ["device-tests"],
+    require_root: true,
+    header_libs: ["bpf_connectivity_headers"],
+    srcs: [
+        "BpfNetworkStatsTest.cpp",
+    ],
+    defaults: ["netd_defaults"],
+    static_libs: ["libgmock"],
+    shared_libs: [
+        "libbase",
+        "liblog",
+        "libnetdbpf",
+        "libnetdutils",
+        "libutils",
+    ],
+}