clk: qcom: Constify qcom_cc_driver_data

clk: qcom: Constify qcom_cc_driver_data

The static 'struct qcom_cc_driver_data' contains probe match-like data
and is not modified: neither by the driver defining it nor by common.c
code using it.

Make it const for code safety and code readability.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Reviewed-by: Vladimir Zapolskiy <vladimir.zapolskiy@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20260331091721.61613-3-krzysztof.kozlowski@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>