[ARM] pxa: Add Colibri LCD functions

This adds LCD functions for Colibri PXA300 and Colibri PXA320 and
configures a LQ043T3DX02 panel.

Original-code-by: Matthias Meier <matthias.j.meier@gmx.net>
Signed-off-by: Daniel Mack <daniel@caiaq.de>
Signed-off-by: Eric Miao <eric.miao@marvell.com>