Looking at available parts for the Rogue (I've seen a few Rogues with the lettering rearranged on the tailgate to spell Rouge), it still has the conventional arrangement almost all small vehicles have now - a conventional rack without any power assistance, and a shaft linkage to the column that incorporates the electric power assistance motor at the bottom. Although the lane following and possibly other driver assistance systems can steer the vehicle using the EPAS motor, it turns the column complete including the steering wheel. So no, it's not drive by wire. Because of the safety implications with a failure of a true drive by wire system, they're pretty expensive to implement, with redundant motors and sensors needed.
You should be able to verify this simply by turning the steering wheel with the engine off - with no power to the system, the mechanical linkage will still turn the wheels - though you'll find it hard to turn while stationary with no assistance.