[Bug target/64782] -mcpu=native should be supported on aarch64

[ktkachov at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64782
Bug 64782 depends on bug 64784, which changed state.

Bug 64784 Summary: -march=native should be supported
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64784

           What    |Removed                     |Added
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             Status|ASSIGNED                    |RESOLVED
         Resolution|---                         |FIXED