[01/02] pxa: add 2d graphics driver

[Eric Miao]

> Uh. What's that!? Another one? How is that driver supposed to be used?
> Is there any userspace reference? And did you see the DirectFB supported
> version of such a driver I submitted several times already?
>
> Sigh. We sould really avoid to have two drivers for the same purpose.
> Any idea how to solve this?
>

I think this is the original version we had in our internal release
years ago, and released after solving some legal issues now.