ARM: dts: imxrt1020: add gpt1 node

Add gpt1 node for using it as timer.

Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
diff --git a/arch/arm/dts/imxrt1020.dtsi b/arch/arm/dts/imxrt1020.dtsi
index 0a3a3b4..cab608c 100644
--- a/arch/arm/dts/imxrt1020.dtsi
+++ b/arch/arm/dts/imxrt1020.dtsi
@@ -129,5 +129,13 @@
 			interrupt-controller;
 			#interrupt-cells = <2>;
 		};
+
+		gpt1: gpt1@401ec000 {
+			compatible = "fsl,imxrt-gpt";
+			reg = <0x401ec000 0x4000>;
+			interrupts = <100>;
+			clocks = <&osc>;
+			status = "disabled";
+		};
 	};
 };