arm64: dts: qcom: sm8450: Hook up GPU cooling device

In order to allow for throttling the GPU, hook up the cooling device
to the respective thermal zones. Also, update the trip point label
to be more telling, while at it.
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20240102-topic-gpu_cooling-v1-10-fda30c57e353@linaro.orgSigned-off-by: Bjorn Andersson <andersson@kernel.org>

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

@@ -2038,6 +2038,7 @@ gpu: gpu@3d00000 {
 			operating-points-v2 = <&gpu_opp_table>;
 
 			qcom,gmu = <&gmu>;
+			#cooling-cells = <2>;
 
 			status = "disabled";
 
@@ -4892,6 +4893,13 @@ gpu-top-thermal {
 			polling-delay = <0>;
 			thermal-sensors = <&tsens0 14>;
 
+			cooling-maps {
+				map0 {
+					trip = <&gpu_top_alert0>;
+					cooling-device = <&gpu THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+				};
+			};
+
 			trips {
 				thermal-engine-config {
 					temperature = <125000>;
@@ -4911,7 +4919,7 @@ reset-mon-cfg {
 					type = "passive";
 				};
 
-				gpu0_tj_cfg: tj-cfg {
+				gpu_top_alert0: trip-point0 {
 					temperature = <95000>;
 					hysteresis = <5000>;
 					type = "passive";
@@ -4924,6 +4932,13 @@ gpu-bottom-thermal {
 			polling-delay = <0>;
 			thermal-sensors = <&tsens0 15>;
 
+			cooling-maps {
+				map0 {
+					trip = <&gpu_bottom_alert0>;
+					cooling-device = <&gpu THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+				};
+			};
+
 			trips {
 				thermal-engine-config {
 					temperature = <125000>;
@@ -4943,7 +4958,7 @@ reset-mon-cfg {
 					type = "passive";
 				};
 
-				gpu1_tj_cfg: tj-cfg {
+				gpu_bottom_alert0: trip-point0 {
 					temperature = <95000>;
 					hysteresis = <5000>;
 					type = "passive";