viafb: move some modesetting functions to a seperate file

viafb: move some modesetting functions to a seperate file

This patch moves the modesetting functions which are already cleaned up
to a seperate file.
Just the beginning to bring some structure in this mess.

Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
5 files changed