[Bug driver/90983] manual documents `-Wno-stack-usage` flag, but it is unrecognized

[Torsten at Robitzki dot de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90983

--- Comment #7 from Torsten Robitzki <Torsten at Robitzki dot de> ---
Thanks, that workaround works for me.