Migrate from aidl to manual implementation

Since aidl does not support uint32_t as there is no unsigned int in
Java, after discussion we decided to stop using aidl as there are many
low-level flags implemented as unsigned int in current system, and it
will be more effort to fit them into aidl than write the boiler plate
by ourselves.

Test: "atest buffer_hub_binder_service-test" passed.
Bug: 117559794
Change-Id: I81c799e9507d686e92e34544c9b48b91c7a37157