ARM: dts: stm32: add uart8 node for stm32h743 MCU

Add support for UART8 by applying the settings specified in the
reference manual RM0433.

Signed-off-by: Dario Binacchi <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Alexandre Torgue <[email protected]>

Author: passgat

arch/arm/boot/dts/st/stm32h743.dtsi

@@ -211,6 +211,14 @@
 			};
 		};
 
+		uart8: serial@40007c00 {
+			compatible = "st,stm32h7-uart";
+			reg = <0x40007c00 0x400>;
+			interrupts = <83>;
+			status = "disabled";
+			clocks = <&rcc UART8_CK>;
+		};
+
 		usart1: serial@40011000 {
 			compatible = "st,stm32h7-uart";
 			reg = <0x40011000 0x400>;