Fix the following sparse warnings in arch/arm/mach-s3c2440/mach-mini2440.c
due to missing 'static'.

warning: symbol 'mini2440_lcd_cfg' was not declared. Should it be static?
warning: symbol 'mini2440_fb_info' was not declared. Should it be static?
Signed-off-by: Ben Dooks <ben-linux@fluff.org>