Oct 12 (Reuters) - GlaxoSmithKline’s consumer healthcare unit is drawing interest from private equity firms such as Advent, CVC and KKR, ahead of the British drugmaker’s planned separation next year, Bloomberg News reported on Tuesday, citing sources. (Reporting by Pushkala Aripaka in Bengaluru; Editing by Shinjini Ganguli) Our Standards: The Thomson Reuters Trust Principles.