component/bt: add bluedroid 1st version

1. add bluedroid 1st version
2. alarm adapter
3. task semaphore lock
4. other bugs resolved

components/bt/bluedroid/hci/include/buffer_allocator.h

@@ -0,0 +1,25 @@
+/******************************************************************************
+ *
+ *  Copyright (C) 2014 Google, Inc.
+ *
+ *  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 _BUFFER_ALLOCATOR_H_
+
+#include "allocator.h"
+
+const allocator_t *buffer_allocator_get_interface();
+
+#endif /*_BUFFER_ALLOCATOR_H_*/