clk: qcom: gcc-ipq9574: constify struct clk_init_data

Make the clk_init_data struct constant.
Signed-off-by: Devi Priya <quic_devipriy@quicinc.com>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230425084010.15581-5-quic_devipriy@quicinc.com