arm64: dts: ti: k3-am69-sk: Add TPS62873 node

Add DTS node for two TPS6287x high current buck convertors.

The two TPS6287x supply power to the MAIN domain for AVS and other core
supplies.
Signed-off-by: Neha Malcom Francis <n-francis@ti.com>
Link: https://lore.kernel.org/r/20240528040159.3919652-3-n-francis@ti.comSigned-off-by: Vignesh Raghavendra <vigneshr@ti.com>

arch/arm64/boot/dts/ti/k3-am69-sk.dts

@@ -814,6 +814,27 @@ ldoa4: ldo4 {
 			};
 		};
 	};
+
+	tps62873a: regulator@40 {
+		compatible = "ti,tps62873";
+		reg = <0x40>;
+		bootph-pre-ram;
+		regulator-name = "VDD_CPU_AVS";
+		regulator-min-microvolt = <600000>;
+		regulator-max-microvolt = <900000>;
+		regulator-boot-on;
+		regulator-always-on;
+	};
+
+	tps62873b: regulator@43 {
+		compatible = "ti,tps62873";
+		reg = <0x43>;
+		regulator-name = "VDD_CORE_0V8";
+		regulator-min-microvolt = <760000>;
+		regulator-max-microvolt = <840000>;
+		regulator-boot-on;
+		regulator-always-on;
+	};
 };
 
 &wkup_gpio0 {