tests/functional/s390x: Add reverse debugging test for s390x

We just have to make sure that we can set the endianness to big endian,
then we can also run this test on s390x.

Reviewed-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-ID: <20251128133949.181828-1-thuth@redhat.com>
3 files changed