arm64: dts: qcom: sc8180x: Add missing CPU<->MDP_CFG path

To guarantee the required resources are enabled, describe the
interconnect path between the MDSS and the CPU.

Fixes: 494dec9b ("arm64: dts: qcom: sc8180x: Add display and gpu nodes")
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20231230-topic-8180_more_fixes-v1-8-93b5c107ed43@linaro.orgSigned-off-by: Bjorn Andersson <andersson@kernel.org>

arch/arm64/boot/dts/qcom/sc8180x.dtsi

@@ -2701,9 +2701,15 @@ mdss: mdss@ae00000 {
 			interrupt-controller;
 			#interrupt-cells = <1>;
 
-			interconnects = <&mmss_noc MASTER_MDP_PORT0 0 &mc_virt SLAVE_EBI_CH0 0>,
-					<&mmss_noc MASTER_MDP_PORT1 0 &mc_virt SLAVE_EBI_CH0 0>;
-			interconnect-names = "mdp0-mem", "mdp1-mem";
+			interconnects = <&mmss_noc MASTER_MDP_PORT0 QCOM_ICC_TAG_ALWAYS
+					 &mc_virt SLAVE_EBI_CH0 QCOM_ICC_TAG_ALWAYS>,
+					<&mmss_noc MASTER_MDP_PORT1 QCOM_ICC_TAG_ALWAYS
+					 &mc_virt SLAVE_EBI_CH0 QCOM_ICC_TAG_ALWAYS>,
+					<&gem_noc MASTER_AMPSS_M0 QCOM_ICC_TAG_ALWAYS
+					 &config_noc SLAVE_DISPLAY_CFG QCOM_ICC_TAG_ALWAYS>;
+			interconnect-names = "mdp0-mem",
+					     "mdp1-mem",
+					     "cpu-cfg";
 
 			iommus = <&apps_smmu 0x800 0x420>;