Added mutex driver constructor with mutex group
Added mutex driver constructor with mutex group

etk29321/firmware,etk29321/firmware,BrewPi/firmware,glibersat/firmware,BrewPi/firmware,BrewPi/firmware,glibersat/firmware,glibersat/firmware,glibersat/firmware,BrewPi/firmware,etk29321/firmware,BrewPi/firmware,glibersat/firmware,BrewPi/firmware,glibersat/firmware,etk29321/firmware,etk29321/firmware,BrewPi/firmware,BrewPi/firmware,glibersat/firmware,etk29321/firmware