dts: arm: renesas: ra: ra6: added missing io ports

Additional IO ports (6,7 and 8) are availble on the r7fa6m4af3cfb
variant of the RA6M4 Microcontroller.

Signed-off-by: Ian Morris <[email protected]>

Author: iandmorris

dts/arm/renesas/ra/ra6/r7fa6m4af3cfb.dtsi

@@ -18,5 +18,35 @@
 				reg = <0x0 DT_SIZE_M(1)>;
 			};
 		};
+
+		ioport6: gpio@400800c0 {
+			compatible = "renesas,ra-gpio-ioport";
+			reg = <0x400800c0 0x20>;
+			port = <6>;
+			gpio-controller;
+			#gpio-cells = <2>;
+			ngpios = <16>;
+			status = "disabled";
+		};
+
+		ioport7: gpio@400800e0 {
+			compatible = "renesas,ra-gpio-ioport";
+			reg = <0x400800e0 0x20>;
+			port = <7>;
+			gpio-controller;
+			#gpio-cells = <2>;
+			ngpios = <16>;
+			status = "disabled";
+		};
+
+		ioport8: gpio@40080100 {
+			compatible = "renesas,ra-gpio-ioport";
+			reg = <0x40080100 0x20>;
+			port = <8>;
+			gpio-controller;
+			#gpio-cells = <2>;
+			ngpios = <16>;
+			status = "disabled";
+		};
 	};
 };