Mphasis, Hexaware Technologies, TPG Capital-owned Altimetrik and private equity fund Chryscapital are among those who have shown initial interest to acquire a majority stake in the Bengaluru-based technology services firm SLK Software, multiple people aware of the development said.The potential buyers submitted non-binding bids ranging from Rs 4,700 crore to Rs 5,600 crore ($550-650 million) last week, they said. The promoters of SLK Software, the Amin family, are looking for a valuation of $800 million, ET reported last month. Investment bank…