Bring Clipv1 & m200v4 plugin buffer down to this limit
zxbox, chessbox and rockboy build on the clip
rockboy doesn't build on m200v4 due to not enough buttons to make a keymap
Some gameboy roms won't run on Clipv1: tetris does but not pokemon for example
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@26144 a1c6a512-1295-4272-9138-f99709370657