m68k: use MMU version of setup.h for both MMU and non-MMU

The MMU version of setup.h can be used for all m68k platforms.
Without a single file "make headers_install" is broken for m68k
(since each of the sub-varients of setup.h are not installed).

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
3 files changed