[Libdlo] Draw fbX number on the green screen

[Alexander Todorov]

Hi all,
I've reworked my implementation and now the bitmap arrays are gone. The images 
on screen are now drawn as if they are a 7 segment LED display. This utilizes a 
small function to draw rectangles (probably that can be replaced with 
dlfb_ops_fillrect()) and the definition of the characters this way is only a 
small array of u8 numbers encoding which segments are visible for the given 
digit/character.

The patch totals at 173 lines including comments and data definitions. There are 
2 helper functions defined and one that does the job of calling the helpers. 
Only that one is executed from the existing udlfb code.

Let me know if anyone is interested.

Regards,
Alexander.