* Investors include Facebook, General Atlantic and Silver Lake. : NEW DELHI (Reuters) - KKR & Co Inc (KKR.N) will invest $1.5 billion in Reliance Industries’ (RELI.NS) Jio Platforms, its biggest investment in Asia to date and bringing the amount of new funds raised by the Indian digital company this month to a massive $10 billion. Jio Platforms, which houses movie, music apps and telecoms venture Jio Infocomm, has now sold a combined stake of just over 17% in five fundraising deals led by Facebook Inc (FB.O) which spent $5.7 billion to take 9.99%.