chat: Adding serverCall as a reserved word.
chat: Adding serverCall as a reserved word.

Change-Id: I23053e7930c46b8865e5f33b6d99e2f194bbed59

viksit/chat,viksit/chat,vanadium/chat,vanadium/chat,vanadium/chat,viksit/chat,viksit/chat,vanadium/chat,viksit/chat,vanadium/chat