OMAP: LDP: Port the display driver to new DSS2

Port the old omapfb panel driver to DSS2. This patch changes the board
file only, the driver is ported in separate patch.

Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
Acked-by: Stanley Miao <stanley.miao@windriver.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>