This patch merges all 68000 core cpus into one directory.
There is a lot of common code in the 68328, 68EZ328 and 68VZ328 directories.

This will also facilitate easy development of support for original stand
alone MC68000 CPU machines.
Signed-off-by: NLuis Alves <ljalvs@gmail.com>
Signed-off-by: NGreg Ungerer <gerg@uclinux.org>