[Bug target/70133] AArch64 -mtune=native generates improperly formatted -march parameters

[ktkachov at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70133

--- Comment #9 from ktkachov at gcc dot gnu.org ---
Thanks for picking this up.
I agree we should keep track of the extensions implied by the architecture