arm64: dts: qcom: sm8350-hdk: Enable display & dsi nodes

Enable the display subsystem and the dsi0 output for
the sm8350-hdk board.

Signed-off-by: Robert Foss <robert.foss@linaro.org>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230117120223.1055225-3-rfoss@kernel.org