dt-bindings: display/msm: Drop bogus interrupt flags cell on MDSS nodes

The MDSS interrupt provider is a single cell, so specifying interrupt flags
on the consumers is incorrect.

Signed-off-by: Rob Herring <robh@kernel.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20220301210513.1855076-1-robh@kernel.org


Signed-off-by: Rob Clark <robdclark@chromium.org>