Merge "aaudio: disable EXCLUSIVE mode" into oc-dev

// Enable a mixer in AAudio service that will mix stream to an ALSA MMAP buffer.

#define MMAP_SHARED_ENABLED      0

// Enable AAUDIO_SHARING_MODE_EXCLUSIVE that uses an ALSA MMAP buffer.

#define MMAP_EXCLUSIVE_ENABLED   1

#define MMAP_EXCLUSIVE_ENABLED   0

using namespace aaudio;