arm64: dts: qcom: msm8916: Add Venus video codec support

This patch adds the Qualcomm Venus video codec node for the video
codec hardware residing on MSM8916 platforms.

Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>