atrf-xtal.c (do_atben, main): moved board-specific code to separate function
atrf-xtal.c (do_atben, main): moved board-specific code to separate function

cfriedt/ben-wpan,cfriedt/ben-wpan,cfriedt/ben-wpan,cfriedt/ben-wpan,cfriedt/ben-wpan,cfriedt/ben-wpan