dt-bindings: display/msm: add missing device nodes to mdss-* schemas

Add missing device nodes (DSI, PHYs, DP/eDP) to the existing MDSS
schemas.

Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/508391/
Link: https://lore.kernel.org/r/20221024164225.3236654-12-dmitry.baryshkov@linaro.org


Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>