[PATCH] ARM: OMAP: Register LCD backlight on PalmTE

Add the backlight device to the list of platform devices to register
on the Palm Tungsten E board. In the same way the device can be added
in other board files if a board has a single LCD with the backlight
controlled by OMAP PWL module.

Signed-off-by: Andrzej Zaborowski <balrog@zabor.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>