[Bug target/77494] -mcpu=cortex-a53 does not allow use of crc extensions

[rearnsha at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77494

--- Comment #5 from Richard Earnshaw <rearnsha at gcc dot gnu.org> ---
(In reply to Jools Wills from comment #4)
> Thanks - reported here -
> https://sourceware.org/bugzilla/show_bug.cgi?id=20567

And already fixed in GAS earlier today.