Chip giant Qualcomm made a takeover approach to rival Intel in recent days, according to people familiar with the matter, in what would be one of the largest and most consequential deals in recent years. A deal for Intel, which has a market value of roughly $90 billion, would come as the chip maker has been suffering through one of the most significant crises in its five-decade history. To get the deal done, Qualcomm could intend to sell assets or parts of Intel to other buyers.