[PATCH] aarch64: update NEWS about branch protection

[Florian Weimer]

* Szabolcs Nagy:

>> Okay, I trust you that CFLAGS is enough.
>> 
>> Are there any ELF notes I should watch out for?
>
> readelf should show
>
>   GNU                  0x00000010       NT_GNU_PROPERTY_TYPE_0        Properties: AArch64 feature: BTI
>
> (PAC may be missing in some libgcc asm, that's
> fixed up in gcc-trunk, but it's harmless.)

It looks like we're hitting a binutils bug:

  <https://sourceware.org/bugzilla/show_bug.cgi?id=26312>

Thanks,
Florian