BeagleBoard: Configure DVI/S-video

BeagleBoard: Configure DVI/S-video

Based on patches from Syed Mohammed Khasim ([email protected]).

Configures the output of the BeagleBoard DVI to be orange.
Configures the output of the BeagleBoard S-Video to be a colorbar.

Changed display_init to beagle_display_init as suggested by Igor Grinberg:
http://www.mail-archive.com/[email protected]/msg51446.html

Signed-off-by: Jason Kridner <[email protected]>
Signed-off-by: Joel A Fernandes <[email protected]>
Signed-off-by: Sandeep Paulraj <[email protected]>