Volkswagen is one of the world’s biggest carmakers by revenue. In India, however, the Volkswagen-Skoda combine has less than 2% of the passenger vehicle market.Now, the German auto giant is negotiating a potentially historic partnership with JSW Group. The proposed structure would give JSW a 51% stake and management control, leaving Volkswagen with 49%—a remarkable concession from a company that previously resisted ceding control during negotiat…