Somehow DSI1 was not hooked up to MDP resulting in it not working.
Fix it.
Fixes: d4a4410583ed ("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
                                                        remote-endpoint = <&mdss_dsi0_in>;
                                                };
                                        };
+
+                                       port@1 {
+                                               reg = <1>;
+                                               dpu_intf2_out: endpoint {
+                                                       remote-endpoint = <&mdss_dsi1_in>;
+                                               };
+                                       };
                                };
                        };
 
                                        port@0 {
                                                reg = <0>;
                                                mdss_dsi1_in: endpoint {
+                                                       remote-endpoint = <&dpu_intf2_out>;
                                                };
                                        };