[Bug target/82990] Update the default -mzeroupper setting

[sebastian.peryt at intel dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82990

--- Comment #5 from Sebastian Peryt <sebastian.peryt at intel dot com> ---
(In reply to H.J. Lu from comment #3)
> Created attachment 42611 [details]
> A better patch
> 
> Sebastian, please take a look.
LGTM