[PATCH] Allow clang to build __clear_cache on ARM

[Rafael Espíndola]

> Because clang would then expect a function signature. I tried this but
> found the Sema/builtins-arm.c and Sema/builtins-aarch64.c tests failed
> as there was no definition of the __clear_cache function.

Oh, OK. LGTM.

Cheers,
Rafael