clk: tests: Add missing test case for ranges

Let's add a test on the rate range after a reparenting. This fails for
now, but it's worth having it to document the corner cases we don't
support yet.

Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://lore.kernel.org/r/20220816112530.1837489-26-maxime@cerno.tech
Tested-by: Naresh Kamboju <naresh.kamboju@linaro.org>
Tested-by: Linux Kernel Functional Testing <lkft@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>