[PATCH 36/59] aarch64: Fix gcs linker flags

[Florian Weimer]

* Adhemerval Zanella:

> clang does not work by using whitespace for defining the -z option:
>
> $ make test t=misc/tst-gcs-disabled
> [...]
> clang: error: no such file or directory: 'gcs=always'
>
> Use the usual comma separate way.

Passes visual inspection.

Reviewed-by: Florian Weimer <fweimer@redhat.com>

Thanks,
Florian