OMAP: add TI OMAP1 external LCD controller support - SoSSI

- Adds support for Texas Instruments OMAP1 processors boards connected with
  external LCD controller through "Special OptimiSed Screen Interface"

Signed-off-by: Trilok Soni <soni.trilok@gmail.com>
Cc: Tony Lindgren <tony@atomide.com>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>