arm64: dts: qcom: sm8450: provide MDSS cfg interconnect

Add support for the MDSS cfg-cpu bus vote on the SM8450 platform.
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20230712121145.1994830-9-dmitry.baryshkov@linaro.orgSigned-off-by: Bjorn Andersson <andersson@kernel.org>

arch/arm64/boot/dts/qcom/sm8450.dtsi

@@ -14,6 +14,7 @@
 #include <dt-bindings/mailbox/qcom-ipcc.h>
 #include <dt-bindings/phy/phy-qcom-qmp.h>
 #include <dt-bindings/power/qcom-rpmpd.h>
+#include <dt-bindings/interconnect/qcom,icc.h>
 #include <dt-bindings/interconnect/qcom,sm8450.h>
 #include <dt-bindings/soc/qcom,gpr.h>
 #include <dt-bindings/soc/qcom,rpmh-rsc.h>
@@ -2720,8 +2721,12 @@ mdss: display-subsystem@ae00000 {
 
 			/* same path used twice */
 			interconnects = <&mmss_noc MASTER_MDP_DISP 0 &mc_virt SLAVE_EBI1_DISP 0>,
-					<&mmss_noc MASTER_MDP_DISP 0 &mc_virt SLAVE_EBI1_DISP 0>;
-			interconnect-names = "mdp0-mem", "mdp1-mem";
+					<&mmss_noc MASTER_MDP_DISP 0 &mc_virt SLAVE_EBI1_DISP 0>,
+					<&gem_noc MASTER_APPSS_PROC QCOM_ICC_TAG_ACTIVE_ONLY
+					 &config_noc SLAVE_DISPLAY_CFG QCOM_ICC_TAG_ACTIVE_ONLY>;
+			interconnect-names = "mdp0-mem",
+					     "mdp1-mem",
+					     "cpu-cfg";
 
 			resets = <&dispcc DISP_CC_MDSS_CORE_BCR>;