[PATCH] Video Mode Handling - Reduce memory footprint of fbdev

[PATCH] Video Mode Handling - Reduce memory footprint of fbdev

This patch is entirely optional.  Its only advantage is reduction of kernel
size by ~5-6K.

a. Mark modedb as __init.

b. Add CONFIG_FB_MODE_HELPERS.  Unselecting this will uninclude the code
   for Generalized Timing Formula and the EDID parser on kernel compilation.
   These are used only by radeonfb, rivafb and i810fb.

Signed-off-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>