[Bug target/128091] Enable -fasynchronous-unwind-tables by default on sparc64 Linux

[stian at itx dot no via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=128091

--- Comment #2 from Stian Halseth <stian at itx dot no> ---
Patch:
https://inbox.sourceware.org/gcc-patches/20261022182707.206498-1-st...@itx.no/