Not every state requires you to notify the officer during a traffic stop. In those that do, I believe it only applies to the driver.
Notifying the officer without any requirement to do so is entirely up to you. Some officers might appreciate being notified, others may be complete jerks and insist on seeing your permit, then argue whether your permit is valid in that state. In either case, keep your hands visible.
I'm not afraid of the guy who wants many guns; I'm afraid of the guy who wants just one.