dts: renesas: Add ADC support for RZ/G3S

Add ADC nodes to Rensas RZ/G3S devicetree

Signed-off-by: Phuc Pham <phuc.pham.xr@bp.renesas.com>
Signed-off-by: Binh Nguyen <binh.nguyen.xw@renesas.com>

Author: Phuc Pham

dts/arm/renesas/rz/rzg/r9a08g045.dtsi

@@ -8,6 +8,7 @@
 #include <dt-bindings/i2c/i2c.h>
 #include <mem.h>
 #include <freq.h>
+#include <zephyr/dt-bindings/adc/adc.h>
 
 / {
 	compatible = "renesas,r9a08g045";
@@ -192,6 +193,17 @@
 			};
 		};
 
+		adc: adc@40058000 {
+			compatible = "renesas,rz-adc";
+			reg = <0x40058000 0x80>;
+			interrupts = <312 3>;
+			interrupt-names = "scanend";
+			#io-channel-cells = <1>;
+			vref-mv = <1800>;
+			channel-available-mask = <0x01FF>;
+			status = "disabled";
+		};
+
 		pinctrl: pin-controller@41030000 {
 			compatible = "renesas,rzg-pinctrl";
 			reg = <0x41030000 DT_SIZE_K(64)>;