clk: qcom: dispcc-sm8650: Update the GDSC flags

clk: qcom: dispcc-sm8650: Update the GDSC flags

[ Upstream commit 7de10ddbdb9d03651cff5fbdc8cf01837c698526 ]

Add missing POLL_CFG_GDSCR to the MDSS GDSC flags.

Fixes: 90114ca11476 ("clk: qcom: add SM8550 DISPCC driver")
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20240717-dispcc-sm8550-fixes-v2-4-5c4a3128c40b@linaro.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>