[PATCH] fix drivers/video/imacfb.c compilation

Fix build error on x86_64.  There's nothing even remotely close to
imacmp_seg in the kernel, so I removed the whole line.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Edgar Hucek <hostmaster@ed-soft.at>
Cc: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>