Update language to comply with Android's inclusive language guidance

#include <media/EffectsFactoryApi.h>

namespace android {

// This is a dummy proxy descriptor just to return to Factory during the initial

// This is a stub proxy descriptor just to return to Factory during the initial

// GetDescriptor call. Later in the factory, it is replaced with the

// SW sub effect descriptor

// proxy UUID af8da7e0-2ca1-11e3-b71d-0002a5d5c51b