arm64: dts: qcom: sc7280: Add a blank line in the dp node

It's weird that there's a blank line between the two port nodes but
not between the attributes and the first port node. Add an extra blank
line to make it look right.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220202132301.v3.11.Iecb7267402e697a5cfef4cd517116ea5b308ac9e@changeid