newlib: require autoconf-2.69

[Corinna Vinschen]

On Jan 11 19:52, Mike Frysinger wrote:
> On 11 Jan 2022 11:23, Corinna Vinschen wrote:
> > IOW, let's utilize override.m4 and bump _GCC_AUTOCONF_VERSION to 2.69.
> > Is that ok?
> 
> sure.  i need this series approved first:
> https://sourceware.org/pipermail/newlib/2022/018800.html

I alread had:
https://sourceware.org/pipermail/newlib/2022/018838.html


Thanks,
Corinna