Add support for the video controller IP block included into Xilinx ML300 and
ML403 reference designs.

Signed-off-by: Andrei Konovalov <redacted>
---

This patch relies on the "Patchset to establish sanity in Xilinx Virtex support" by Gran Likely to have
the frame buffer device registered on the platform bus. Without this patchset one needs to fill in
the struct platform_device and make sure platform_device_register() is called elsewhere.

Reviews and comments are welcome.

Would be nice to get this driver into mainline for the 2.6.22.

Thanks,
Andrei