arm64: dts: sdm845: Add videocc node

This adds the video clock controller node to sdm845 based on the examples
in the bindings.

Signed-off-by: Taniya Das <tdas@codeaurora.org>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>