[Bug translation/90160] missing quote in diagnostic

[roland.illig at gmx dot de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90160

--- Comment #1 from Roland Illig <roland.illig at gmx dot de> ---
From csky.c:

        warning (0, "cpu %s is not based on arch %s, ignoring the arch",
                 csky_selected_cpu->name, csky_selected_arch->name);