[PATCH] m68knommu: improve syscall entry and fix strace

Here is a patch to the system call handling for 5307/5272/etc to:

- fix the strace support (one tested the wrong bit)
- make all system calls a little bit faster by inlining set_esp0 and
  supporting ENOSYS out of the critical path.
- remove extraneous spaces

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>