Chip startup Mythic Inc. has raised $125 million in a new funding round, money that will help support its attempt to challenge Nvidia Corp. in the lucrative market for artificial intelligence processors.Mythic, which tapped Nvidia veteran Taner Ozcelik as its chief executive officer last year, raised the money from a group led by venture firm DCVC, according to a statement Wednesday. The investors also included New Enterprise Associates, Atreides Management, SoftBank Group Corp., Honda Motor Co....