arm64: dts: ti: k3-am65-mcu: add system control module node

The MCU System control module support is added to the device tree to allow
drivers to access to their System control module registers.
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Tero Kristo <t-kristo@ti.com>

arch/arm64/boot/dts/ti/k3-am65-mcu.dtsi

@@ -6,6 +6,14 @@
  */
 
 &cbass_mcu {
+	mcu_conf: scm_conf@40f00000 {
+		compatible = "syscon", "simple-mfd";
+		reg = <0x0 0x40f00000 0x0 0x20000>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges = <0x0 0x0 0x40f00000 0x20000>;
+	};
+
 	mcu_uart0: serial@40a00000 {
 		compatible = "ti,am654-uart";
 			reg = <0x00 0x40a00000 0x00 0x100>;

arch/arm64/boot/dts/ti/k3-am65.dtsi

@@ -74,6 +74,7 @@ cbass_main: interconnect@100000 {
 			 /* MCUSS Range */
 			 <0x00 0x28380000 0x00 0x28380000 0x00 0x03880000>,
 			 <0x00 0x40200000 0x00 0x40200000 0x00 0x00900100>,
+			 <0x00 0x40f00000 0x00 0x40f00000 0x00 0x00020000>, /* CTRL_MMR0 */
 			 <0x00 0x41000000 0x00 0x41000000 0x00 0x00020000>,
 			 <0x00 0x41400000 0x00 0x41400000 0x00 0x00020000>,
 			 <0x00 0x41c00000 0x00 0x41c00000 0x00 0x00080000>,
@@ -92,6 +93,7 @@ cbass_mcu: interconnect@28380000 {
 			#size-cells = <2>;
 			ranges = <0x00 0x28380000 0x00 0x28380000 0x00 0x03880000>, /* MCU NAVSS*/
 				 <0x00 0x40200000 0x00 0x40200000 0x00 0x00900100>, /* First peripheral window */
+				 <0x00 0x40f00000 0x00 0x40f00000 0x00 0x00020000>, /* CTRL_MMR0 */
 				 <0x00 0x41000000 0x00 0x41000000 0x00 0x00020000>, /* MCU R5F Core0 */
 				 <0x00 0x41400000 0x00 0x41400000 0x00 0x00020000>, /* MCU R5F Core1 */
 				 <0x00 0x41c00000 0x00 0x41c00000 0x00 0x00080000>, /* MCU SRAM */