(Reuters) -Shares of Mobileye Global Inc are up 30% in early afternoon trading on Wednesday following its U.S. debut, valuing the self-driving technology unit of Intel Corp at $21.8 billion as investors lapped up what could be the last major IPO of 2022. The debut comes after a turbulent period when Mobileye settled for merely a third of the $50 billion valuation it was targeting earlier in its IPO. “The valuation probably wasn’t what we wanted it to be. But there was a lot of value in gaining that public company platform now,” said Dan Galves, chief communications officer at Mobileye. Galves …