Add support for Innolux CheMei 12" G121X1-L03 XGA LVDS display.

Datasheet: http://www.azdisplays.com/PDF/G121X1-L03.pdfSigned-off-by: Akshay Bhat <akshay.bhat@timesys.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>