Fix plymouth for bios systems

This sets the framebuffer size to 1024x768x24 on bios systems. It won't look amazing on 1080p displays, but the low resolution should work on 1600x900 and 1280x720 screens. It doesn't look stretched at least.
Added an additional newline

Looks a bit better
Merge pull request #70 from sharkwouter/patch-20

Fix plymouth for bios systems