arm64: dts: qcom: sm8350: Hook up DSI1 to MDP

Somehow DSI1 was not hooked up to MDP resulting in it not working.
Fix it.

Fixes: d4a44105 ("arm64: dts: qcom: sm8350: Add display system nodes")
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230120210101.2146852-8-konrad.dybcio@linaro.org

arch/arm64/boot/dts/qcom/sm8350.dtsi

@@ -2879,6 +2879,13 @@ dpu_intf1_out: endpoint {
 							remote-endpoint = <&mdss_dsi0_in>;
 						};
 					};
+
+					port@1 {
+						reg = <1>;
+						dpu_intf2_out: endpoint {
+							remote-endpoint = <&mdss_dsi1_in>;
+						};
+					};
 				};
 			};
 
@@ -3047,6 +3054,7 @@ ports {
 					port@0 {
 						reg = <0>;
 						mdss_dsi1_in: endpoint {
+							remote-endpoint = <&dpu_intf2_out>;
 						};
 					};