[binutils-gdb] sim: testsuite: make subdir unconditional

[sergiodj+buildbot@redhat.com]

*** TEST RESULTS FOR COMMIT 6dae8a88bf814b8729ad883c92c7b75fdccc7be1 ***

Author: Mike Frysinger <vapier@gentoo.org>
Branch: master
Commit: 6dae8a88bf814b8729ad883c92c7b75fdccc7be1

sim: testsuite: make subdir unconditional
Since the testsuite subdir has to handle dynamic arch values already,
there's no real value in requiring arches to opt in to it.  Most have
a testsuite now anyways, and we're requiring it in the future.