Revert "hikey960: Remove hifi dsp support."

This reverts commit 1d7e5889cd761a9eaecb130c52582d2b0707a08d.

Reason for revert: previous commit broke build_test target, b/219798815

Change-Id: If678459053b79b81de27a1b7d514cc0c6101d97d
diff --git a/hifi/debug-hifi/Android.mk b/hifi/debug-hifi/Android.mk
new file mode 100644
index 0000000..eefcaa5
--- /dev/null
+++ b/hifi/debug-hifi/Android.mk
@@ -0,0 +1,23 @@
+# 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
+
+LOCAL_PATH := $(call my-dir)
+
+include $(CLEAR_VARS)
+LOCAL_MODULE := debug-hifi
+LOCAL_LICENSE_KINDS := SPDX-license-identifier-Apache-2.0
+LOCAL_LICENSE_CONDITIONS := notice
+LOCAL_SHARED_LIBRARIES := liblog libcutils
+LOCAL_SRC_FILES := debug-hifi.c
+include $(BUILD_EXECUTABLE)