dts: boards: stm32h562: Add usart6 node

Add the remaining usart node for stm32h562.

Signed-off-by: Jeppe Odgaard <[email protected]>

Author: Jeppe Odgaard

dts/arm/st/h5/stm32h562.dtsi

@@ -145,6 +145,15 @@
 			status = "disabled";
 		};
 
+		usart6: serial@40006400 {
+			compatible = "st,stm32-usart", "st,stm32-uart";
+			reg = <0x40006400 0x400>;
+			clocks = <&rcc STM32_CLOCK_BUS_APB1 0x02000000>;
+			resets = <&rctl STM32_RESET(APB1L, 25U)>;
+			interrupts = <85 0>;
+			status = "disabled";
+		};
+
 		usart10: serial@40006800 {
 			compatible = "st,stm32-usart", "st,stm32-uart";
 			reg = <0x40006800 0x400>;