Add Wifi HAL hostapd AIDL interface definitions.

Add AIDL version of Wifi HAL hostapd interfaces, converted from
android.hardware.wifi.hostapd@1.3 HIDL interfaces.

Bug: 194806512
Test: m android.hardware.wifi.hostapd-update-api
Change-Id: I1035f8bc9171e59967448fa438f2cc79ad53c066
diff --git a/wifi/hostapd/aidl/Android.bp b/wifi/hostapd/aidl/Android.bp
new file mode 100644
index 0000000..75758ea
--- /dev/null
+++ b/wifi/hostapd/aidl/Android.bp
@@ -0,0 +1,37 @@
+// 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.
+
+aidl_interface {
+    name: "android.hardware.wifi.hostapd",
+    vendor_available: true,
+    srcs: [
+        "android/hardware/wifi/hostapd/*.aidl",
+    ],
+    stability: "vintf",
+    backend: {
+        java: {
+            sdk_version: "module_current",
+            apex_available: [
+                "//apex_available:platform",
+                "com.android.wifi",
+            ],
+            min_sdk_version: "30",
+        },
+        ndk: {
+            vndk: {
+                enabled: true,
+            },
+        },
+    },
+}