Since it says the second screen is for a second view of the action, not a second player, I'm gonna guess that there are not any controls dedicated to either screen. This is not to prevent the game from doing this, however.
Hmm, true, but that screen would be wasted if the player would have to switch controls over anyway. I figured a small D-Pad + Z Button arrangment would work..
Edit:
Hmm, revised my drawing, the screens are on TOP of one another, not side-by-side..