Create native version of Thermal Throttling API.

Create native thermal manager API of thermal mananger service.
Export libthermal NDK library.

Bug: 137151587
Bug: 136285293

Test: build, atest thermalmanager-test

Change-Id: I1ec7c746f7e814c701b306e06fe08c3641c39e88
diff --git a/include/android/CoolingDevice.h b/include/android/CoolingDevice.h
new file mode 100644
index 0000000..2f366be
--- /dev/null
+++ b/include/android/CoolingDevice.h
@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2020 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.
+ */
+
+#ifndef ANDROID_OS_COOLINGDEVICE_H
+#define ANDROID_OS_COOLINGDEVICE_H
+
+#include <binder/Parcelable.h>
+#include <utils/RefBase.h>
+
+namespace android {
+namespace os {
+
+/**
+ * CoolingDevice is a structure to encapsulate cooling device status.
+ */
+struct CoolingDevice : public android::Parcelable {
+    /** Current throttle state of the cooling device.  */
+    float mValue;
+    /** A cooling device type from ThermalHAL */
+    uint32_t mType;
+    /** Name of this cooling device */
+    String16 mName;
+
+    CoolingDevice()
+        : mValue(0.0f),
+          mType(0),
+          mName("") {
+    }
+    virtual status_t readFromParcel(const android::Parcel* parcel) override;
+    virtual status_t writeToParcel(android::Parcel* parcel) const override;
+};
+
+} // namespace os
+} // namespace android
+
+#endif /* ANDROID_OS_COOLINGDEVICE_H */