arm: dts: j721s2: Add VTM node in R5

Also adds bootph-pre-ram property to VTM node and the pmic node.

vdd-supply is used to assign the buck regulator that the AVS driver can
use to program the proper voltage which it picked up from e-fuse.

Reviewed-by: Udit Kumar <u-kumar1@ti.com>
Signed-off-by: Manorit Chawdhry <m-chawdhry@ti.com>
Reviewed-by: Aniket Limaye <a-limaye@ti.com>

arch/arm/dts/k3-j721s2-r5-common-proc-board.dts

@@ -10,3 +10,12 @@
 #include "k3-j721s2-ddr.dtsi"
 #include "k3-j721s2-common-proc-board-u-boot.dtsi"
 #include "k3-j721s2-r5.dtsi"
+
+&tps659411 {
+	bootph-pre-ram;
+};
+
+&wkup_vtm0 {
+	bootph-pre-ram;
+	vdd-supply-2 = <&bucka1234>;
+};