[Bug target/123460] aarch64: configure --with-arch incorrectly rejects extension names containing hyphens

[acarlotti at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123460

Alice Carlotti <acarlotti at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to work|                            |13.4.1, 14.3.1, 15.2.1,
                   |                            |16.0
   Target Milestone|---                         |13.5