Prepare for a later change that'll cram in per-vCPU feature ID test
cases by renaming the current test case.
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
Link: https://lore.kernel.org/r/20240502233529.1958459-5-oliver.upton@linux.devSigned-off-by: Marc Zyngier <maz@kernel.org>