[OE-core] [fido] Please backport commit

[Bystricky, Juro]

Hello Joshua,
please backport the Yocto master  commit (cherry-pick)
625e0ec8b5e5f1c39b3bfad0e6adfecaf957d689 :"glibc: Consider adding -Wno-error in cases when not using -O2"
to Fido.

This is needed in order to fix the Fido bug https://bugzilla.yoctoproject.org/show_bug.cgi?id=8214.

Thanks

Juro Bystricky
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