[Bug target/97367] powerpc64 g5 and cell optimizations result in .machine power7

[bergner at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97367

--- Comment #13 from Peter Bergner <bergner at gcc dot gnu.org> ---
(In reply to Peter Bergner from comment #11)
> Fixed on trunk.  I'll push the backports after a little burn-in time on
> trunk.

All of Bill's CI testers were green wrt this test case, so I've started
backports.