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

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