ARM: omap2plus_defconfig: Enable TI TVP5150 video decoder support

Many OMAP3 boards have a TVP5150/1 video decoder attached to the OMAP3
ISP so enable support for its driver as a module to be able to test it.

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>