(Reuters) – Activist investor Starboard Value LP asked TriQuint Semiconductor Inc to consider selling or restructuring its mobile power amplifier business, which it says is dragging down the radio frequency chipmaker’s share price. TriQuint shares rose 7 percent on the Nasdaq on Tuesday morning. Starboard said the company should focus on its networks and defense businesses and become a fabless chipmaker like rival Skyworks Solutions Inc. The mobile power amplifier business is part of TriQuint’s mobile devices unit, which accounts for about 65 percent of the company’s revenue. …