ART: Move libammtestjni to Android.bp

Avoids some weird build error under clang-tidy. The project cannot
be moved over completely, yet, as Soong is lacking JNI library
support for android_app.

Bug: 32619234
Test: WITH_TIDY=1 mmma art
Change-Id: I9f207501323a849619eb6fb9588e3a14eab8ce02
diff --git a/tools/amm/Android.bp b/tools/amm/Android.bp
new file mode 100644
index 0000000..e6f6ff7
--- /dev/null
+++ b/tools/amm/Android.bp
@@ -0,0 +1,25 @@
+// 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.
+
+// --- ammtestjni.so -------------
+
+cc_library_shared {
+    name: "libammtestjni",
+
+    srcs: [
+        "AmmTest/jni/ammtest.c",
+    ],
+
+    sdk_version: "current",
+}
diff --git a/tools/amm/Android.mk b/tools/amm/Android.mk
index 47030c5..fa4ca44 100644
--- a/tools/amm/Android.mk
+++ b/tools/amm/Android.mk
@@ -14,13 +14,6 @@
 
 LOCAL_PATH := $(call my-dir)
 
-# --- ammtestjni.so -------------
-include $(CLEAR_VARS)
-LOCAL_MODULE := libammtestjni
-LOCAL_SRC_FILES := $(call all-c-files-under, AmmTest/jni)
-LOCAL_SDK_VERSION := current
-include $(BUILD_SHARED_LIBRARY)
-
 # --- AmmTest.apk --------------
 include $(CLEAR_VARS)
 LOCAL_PACKAGE_NAME := AmmTest
@@ -31,4 +24,3 @@
 LOCAL_JAVA_RESOURCE_FILES := $(LOCAL_PATH)/AmmTest/aahat.png
 LOCAL_MANIFEST_FILE := AmmTest/AndroidManifest.xml
 include $(BUILD_PACKAGE)
-