clk: qcom: cpu-8996: declare ACD clocks

To simplify the code, define 1:1 fixed factor clocks to represent the
ACD pmux parent.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20220714100351.1834711-4-dmitry.baryshkov@linaro.org