New Update:
In theory,I believe KOTAK SECURITIES allows this facility. They have instant fund withdrawal, as well as a bank. So you can seamlessly transfer between Equity, FO, and commodity. Still, you'll have to withdraw to the Kotak bank a/c first. But it will take a lot less time.
However, do check customer reviews of broker's other aspects: charting, software, order execution, brokerage etc.
All said, IMHO, it is safer to play with small amounts until traders realize the realities of trading.