dts: arm: st: wba: Add MCO1 peripheral to STM32WLdevice tree

Added MCO1 peripheral definition to the STM32WL device tree to enable
MCO functionality.

Signed-off-by: Martdur <martin.durietz@gmail.com>

Author: Martdur

dts/arm/st/wl/stm32wl.dtsi

@@ -105,6 +105,13 @@
 			status = "disabled";
 		};
 	};
+	
+	mcos {
+		mco1: mco1 {
+			compatible = "st,stm32-clock-mco";
+			status = "disabled";
+		};
+	};
 
 	soc {
 		flash: flash-controller@58004000 {