Rename libbpf to libbpf_android

Rename the bpf support library in android to libbpf_android to make
it compatible with external bcc project. Fix the Android.bp file to
prevent build break.

Bug: 112334572
Test: No build breakage.
Change-Id: I24ae8aaf8ca8afdded5e46d21f0deec68d6030da
diff --git a/libbpf_android/Android.bp b/libbpf_android/Android.bp
new file mode 100644
index 0000000..2ffacf3
--- /dev/null
+++ b/libbpf_android/Android.bp
@@ -0,0 +1,83 @@
+//
+// Copyright (C) 2018 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.
+//
+
+cc_library_headers {
+    name: "libbpf_android_headers",
+    vendor_available: false,
+    host_supported: false,
+    export_include_dirs: ["include"],
+    target: {
+        linux_bionic: {
+            enabled: true,
+        },
+    },
+}
+
+cc_library {
+    name: "libbpf_android",
+    vendor_available: false,
+    host_supported: false,
+    target: {
+        android: {
+            srcs: [
+                "BpfUtils.cpp",
+            ],
+            sanitize: {
+                misc_undefined: ["integer"],
+            },
+        },
+    },
+
+    shared_libs: [
+        "libbase",
+        "libutils",
+        "liblog",
+        "libnetdutils",
+    ],
+    header_libs: [
+        "libbpf_android_headers"
+    ],
+    export_header_lib_headers: ["libbpf_android_headers"],
+    local_include_dirs: ["include"],
+
+    defaults: ["bpf_defaults"],
+    cflags: [
+        "-Werror",
+        "-Wall",
+        "-Wextra",
+    ],
+}
+
+cc_test {
+    name: "libbpf_android_test",
+    srcs: [
+        "BpfMapTest.cpp",
+    ],
+    defaults: ["bpf_defaults"],
+    cflags: [
+        "-Wall",
+        "-Werror",
+        "-Wno-error=unused-variable",
+    ],
+    static_libs: ["libgmock"],
+    shared_libs: [
+        "libbpf_android",
+        "libbase",
+        "liblog",
+        "libnetdutils",
+        "libutils",
+    ],
+}