[PATCH] Add framebuffer in BBB

[Vijay Kumar Banerjee]

Hello everyone!

I'm excited to post the following patchset. With this patchset
I have the framebuffer working in BBB and have tested it with a 
BBB revC with HDMI connected Screen. 

This patchset uses mmap and hence it's necessary to apply the
patche ON TOP OF mmap patch to avoid merge conflict.

In reply to this mail, I'll be attaching a picture of the screen
where my rectangle drawing application made a nice red rectangle
on the screen just like in FreeBSD.

Thanks and regards,
Vijay