The Nasdaq ended sharply higher on Thursday, as Micron Technology fueled a rally in chip stocks that eclipsed fears that renewed U.S. and Iranian attacks might prolong the Middle East conflict and fuel inflation. Tehran said it hit U.S. military targets in Kuwait, Qatar and Bahrain following U.S. strikes against Iran on Wednesday. The PHLX chip index surged 3.06%, up for a second straight session. The Dow and the S&P 500 also closed higher. Micron Technology jumped 4.5% after the…