By Noel Randewich SAN FRANCISCO (Reuters) – Chipmaker Intel Corp has hired Amir Faintuch, a senior executive at rival Qualcomm Inc , to step up efforts in mobile and Internet-connected gadgets. Hiring a senior executive from a major competitor is rare for Intel, which is known in Silicon Valley for its insular culture, and it reflects the eagerness of the Santa Clara, California, chipmaker to improve its struggling mobile business. Faintuch, who previously oversaw Qualcomms networking and connectivity businesses as president of Qualcomm Atheros, is joining Intel as a senior vice president and co-general manager of the Platform Engineering Group, Intel spokesman Chuck Mulloy said on Friday.