Turbine, a debt platform for limited partners in private equity and VC, has raised $22 million in equity funding.The company offers a credit product allowing limited partners to borrow funds secured by their LP position in venture funds.Turbine has also secured up to $100 million in debt from Silicon Valley Bank to support its loan making.The interest rate on the loans is currently around 9%, providing liquidity to LPs without giving up on the future upside.