For the most part, we can just follow what other architectures
are doing. Java, Node.js and GAP are all available on riscv64.
Frame pointers should be enabled but the architecture, just
like s390x, doesn't support packed relocations at the moment,
so the relevant comment is updated accordingly. As a side
effect, this addresses the fact that it had not been updated
in commit 3c5a6b1754 when packed relocations were enabled
for aarch64.
Resolves: RHEL-85862
Signed-off-by: Andrea Bolognani <abologna@redhat.com>