x86: fix comments in vmlinux_64.lds

for bzImage, the vmlinux_64.lds still have s32 bit code, and startup_32
should be 0. fix the comment.

Signed-off-by: Yinghai Lu <yinghai.lu@sun.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
1 file changed