dts: st: wba: add sai1 node

Add SAI1 A & B to STM32WBA55/65 Series

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

Author: mariopaja

dts/arm/st/wba/stm32wba55.dtsi

@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2023 STMicroelectronics
+ * Copyright (c) 2025 Mario Paja
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -8,6 +9,30 @@
 / {
 	soc {
 		compatible = "st,stm32wba55", "st,stm32wba", "simple-bus";
+
+		sai1_a: sai1@40015404 {
+			compatible = "st,stm32-sai";
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <0x40015404 0x20>;
+			clocks = <&rcc STM32_CLOCK(APB2, 21)>,
+				 <&rcc STM32_SRC_PLL1_P SAI1_SEL(0)>;
+			dmas = <&gpdma1 1 17 (STM32_DMA_MODE_NORMAL | STM32_DMA_PRIORITY_HIGH |
+					      STM32_DMA_16BITS)>;
+			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)>,
+				 <&rcc STM32_SRC_PLL1_P SAI1_SEL(0)>;
+			dmas = <&gpdma1 0 18 (STM32_DMA_MODE_NORMAL | STM32_DMA_PRIORITY_HIGH |
+					      STM32_DMA_16BITS)>;
+			status = "disabled";
+		};
 	};
 };