A recent Sony patent shows a camera-enable PSP dock that allows players to use PlayStation Move controls.
The portable shown in the patent image is a PSPgo, Sony's failed PSP iteration. However, the NGP already has a camera, so PlayStation Move could be possible.
I'd rather that the NGP didn't support Move controls at all. The NGP's appeal is "touch", thanks to rear and front touch input, and not wand-waving.
Wand-waving suits large television screens better, not small handhelds.
This is only a patent, and Sony hasn't stated that Move controls are coming to its handhelds.