[U-Boot] global variables from comon/lcd.c

Hi,

While looking at the common/lcd.c I fail to understand why it declares and uses global variables like lcd_color_fg, lcd_color_color_bg, lcd_base and relies on the drivers / boards to provide them, leading to code duplication. It also provides getters / setters for some of these variables.

To me it seems more logical to have these variables in lcd.c itself. This construction has been around since at least 2004 though, so I tend to think I am missing something.

Does someone know the reason why these variables are not part of lcd.c itself?

Regards, Jeroen