[Bug bootstrap/95712] configure-target-libgcc fails on s390x target because xgcc is not being built

[egorenar at linux dot ibm.com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95712

--- Comment #12 from Alexander Egorenkov <egorenar at linux dot ibm.com> ---
Indeed, adding --disable-bootstrap helps also.