dts: arm: ti: cc23x0: Add GPIO support

Add support for GPIO to cc23x0 SoC.

Signed-off-by: Lars Thalian Morstad <l-morstad@ti.com>
Signed-off-by: Vebjorn Myklebust <v.myklebust@ti.com>
Signed-off-by: Stoyan Bogdanov <sbogdanov@baylibre.com>
Signed-off-by: Julien Panis <jpanis@baylibre.com>

Author: bogdanovs

dts/arm/ti/cc23x0.dtsi

@@ -61,6 +61,16 @@
 			compatible = "ti,cc23x0-pinctrl";
 			reg = <0x40003000 0xc14>;
 		};
+
+		gpio0: gpio@40023000 {
+			compatible = "ti,cc23x0-gpio";
+			reg = <0x40023000 0x804>;
+			interrupts = <5 0>;	/* GPIO combined on CPUIRQ5 */
+			status = "disabled";
+			gpio-controller;
+			#gpio-cells = <2>;	/* Pin (ID), and flags */
+			ngpios = <26>;		/* Only [DIO0, DIO25] are available */
+		};
 	};
 };