[Bug target/89096] [8/9/10 regression] AIX 7 linker rejects _.ro_ sections by default

[dje at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89096

--- Comment #28 from David Edelsohn <dje at gcc dot gnu.org> ---
GCC 7 is no longer supported.  The patch was backported and released in GCC 8.4
and GCC 9.1.