hardware/libhardware/include was being included with -isystem, which
hides warnings. Use a macro to convert modules to hw_device_t** to call
the open function that works in C++ and C.
Bug: 32018017
Test: m -j
Change-Id: If68bf15581975f1217fcab366cef7bc784894641
Key agreement (ECDH) has been punted from the N release, and a
configuration method has been added to support version binding.
Change-Id: Ia4aeee1bd7ab88cda3b9faa653470e608aa55942