clk: qcom: dispcc-sm7150: Fix dispcc_mdss_pclk0_clk_src

clk: qcom: dispcc-sm7150: Fix dispcc_mdss_pclk0_clk_src

[ Upstream commit e3c13e0caa8ceb7dec1a7c4fcfd9dbef56a69fbe ]

Set CLK_OPS_PARENT_ENABLE to ensure the parent gets prepared and enabled
when switching to it, fixing an "rcg didn't update its configuration"
warning.

Signed-off-by: Jens Reidel <adrian@mainlining.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20250919-sm7150-dispcc-fixes-v1-3-308ad47c5fce@mainlining.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>