arm: dts: k3-am654-r5-base-board: enable wkup_vtm0 node and link in supplies

Link the vdd-supplies for the voltage domains under the VTM node. Also,
enable the node under SPL. This will enable the AVS class 0 support on
am65x-evm board.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Keerthy <j-keerthy@ti.com>
diff --git a/arch/arm/dts/k3-am654-r5-base-board.dts b/arch/arm/dts/k3-am654-r5-base-board.dts
index baa3a2c..5c110ef 100644
--- a/arch/arm/dts/k3-am654-r5-base-board.dts
+++ b/arch/arm/dts/k3-am654-r5-base-board.dts
@@ -138,6 +138,12 @@
 	power-domains = <&k3_pds 146 TI_SCI_PD_SHARED>;
 };
 
+&wkup_vtm0 {
+	vdd-supply-3 = <&vdd_mpu>;
+	vdd-supply-4 = <&vdd_mpu>;
+	u-boot,dm-spl;
+};
+
 &wkup_pmx0 {
 	u-boot,dm-spl;
 	wkup_uart0_pins_default: wkup_uart0_pins_default {