dts: st: g4: add sai node for stm32g4xx

Define SAI1 node A & B for STM32G4xx series

Signed-off-by: Mario Paja <mariopaja@hotmail.com>

Author: mariopaja

dts/arm/st/g4/stm32g4.dtsi

@@ -2,6 +2,7 @@
  * Copyright (c) 2021 The Chromium OS Authors
  * Copyright (c) 2019 Richard Osterloh <richard.osterloh@gmail.com>
  * Copyright (c) 2024 STMicroelectronics
+ * Copyright (c) 2025 Mario Paja <mariopaja@hotmail.com>
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -663,6 +664,26 @@
 			interrupts = <63 0>;
 			status = "disabled";
 		};
+
+		sai1_a: sai1@40015404 {
+			compatible = "st,stm32-sai";
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <0x40015404 0x20>;
+			clocks = <&rcc STM32_CLOCK(APB2, 21)>;
+			dmas = <&dma1 1 108 0 0>;
+			status = "disabled";
+		};
+
+		sai1_b: sai1@40015424 {
+			compatible = "st,stm32-sai";
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <0x40015424 0x20>;
+			clocks = <&rcc STM32_CLOCK(APB2, 21)>;
+			dmas = <&dma1 0 109 0 0>;
+			status = "disabled";
+		};
 	};
 
 	die_temp: dietemp {