[ARM] pxa/ezx: add camera support for A780 and A910 EZX phones

Signed-off-by: Bart Visscher <bartv@thisnet.nl>
Signed-off-by: Antonio Ospite <ospite@studenti.unina.it>
Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>