clk: qcom: dispcc-sm8250: Enable parents for pixel clocks

clk: qcom: dispcc-sm8250: Enable parents for pixel clocks

Add CLK_OPS_PARENT_ENABLE to MDSS pixel clock sources to ensure parent
clocks are enabled during clock operations, preventing potential
stability issues during display configuration.

Fixes: 80a18f4a8567 ("clk: qcom: Add display clock controller driver for SM8150 and SM8250")
Signed-off-by: Val Packett <val@packett.cool>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20260312112321.370983-9-val@packett.cool
Signed-off-by: Bjorn Andersson <andersson@kernel.org>