Convert libwvdrmengine to soong.

Bug: 37512442
Test: mmm -j50 vendor/widevine/libwvdrmengine/
Change-Id: I45b06b7f14ca4f65031bbc3806808a191156ee7b

libwvdrmengine/level3/Android.bp

@@ -0,0 +1,48 @@
+//
+// 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.
+//
+
+cc_prebuilt_library_static {
+    name: "libwvlevel3",
+    proprietary: true,
+    owner: "widevine",
+    prefer: true,
+    target: {
+        android_arm: {
+            srcs: ["arm/libwvlevel3.a"],
+        },
+        android_arm64: {
+            srcs: ["arm64/libwvlevel3.a"],
+        },
+        android_x86: {
+            srcs: ["x86/libwvlevel3.a"],
+        },
+        android_x86_64: {
+            srcs: ["x86_64/libwvlevel3.a"],
+        },
+    },
+}
+
+cc_library_static {
+    name: "libwvlevel3",
+    proprietary: true,
+    owner: "widevine",
+    target: {
+        android_mips: {
+            srcs: ["mips/level3_stubs.cpp"],
+            header_libs: ["liboemcrypto_libwvdrmengine_local"],
+        },
+    },
+}