This is the only other #include of defs.h in a .h file that I could find,
and I wouldn't mind a second look.

I noticed that it was also missing an opaque declaration of struct
frame_info, so I added it as well.

2007-12-20  Joel Brobecker  <brobecker@adacore.com>

        * rs6000-tdep.h: Remove defs.h #include.
        (struct frame_info): Add opaque declaration.
        * Makefile.in (rs6000_tdep_h): Update dependencies.

Tested by rebuilding on powerpc-aix.
Does it look OK?

Thanks,
-- 
Joel