BRUSSELS (Reuters) - Alphabet GOOGL.O unit Google is set to win EU antitrust approval for its $2.1 billion acquisition of fitness tracker maker Fitbit FIT.N with its latest concessions to address EU antitrust concerns, people familiar with the matter said on Tuesday. Google has offered to restrict Fitbit data, a pledge similar to an earlier offer to the European Commission, the people said. It has also offered to make it easier for rival makers of wearables to connect to the Android platform by offering them access to Android application programming interface (API), they said.