Convert supplicant service to use new AIDL interface.

Bug: 196235436
Test: Pass AIDL VTS tests and regression tests.
Change-Id: I0d7b75f526c13fc655a023d7dca088339b06b28e
diff --git a/wpa_supplicant/aidl/Android.bp b/wpa_supplicant/aidl/Android.bp
new file mode 100644
index 0000000..0785fe1
--- /dev/null
+++ b/wpa_supplicant/aidl/Android.bp
@@ -0,0 +1,60 @@
+// Copyright (C) 2021 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 "external_wpa_supplicant_8_license"
+    // to get the below license kinds:
+    //   SPDX-license-identifier-BSD
+    default_applicable_licenses: ["external_wpa_supplicant_8_license"],
+}
+
+cc_library_headers {
+    name: "libwpa_aidl_headers",
+    export_include_dirs: ["."],
+    soc_specific: true,
+}
+
+cc_library_static {
+    name: "libwpa_aidl_bp",
+    srcs: ["*.cpp"],
+    defaults: ["wpa_supplicant_cflags_defaults"],
+    soc_specific: true,
+    shared_libs: [
+        "android.hardware.wifi.supplicant-V1-ndk",
+        "libbinder_ndk",
+        "libbase",
+        "libutils",
+        "liblog",
+        "libssl",
+    ],
+    // Generated by building libwpa_hidl and printing LOCAL_CPPFLAGS.
+    cppflags: [
+        "-Wall",
+        "-Werror",
+        "-Wno-unused-parameter",
+        "-Wno-unused-private-field",
+        "-Wno-unused-variable",
+    ],
+    header_libs: [
+        "wpa_supplicant_headers",
+        "libwpa_aidl_headers",
+    ],
+}
+
+filegroup {
+    name: "android.hardware.wifi.supplicant.xml",
+    srcs: ["android.hardware.wifi.supplicant.xml"],
+}