dts: st: h7: fix wwdg1 reg size

nice to have real accurate sizing

Signed-off-by: Manojkumar Subramaniam <[email protected]>

Author: manoj153

dts/arm/st/h7/stm32h7.dtsi

@@ -235,7 +235,7 @@
 
 		wwdg1: watchdog@50003000 {
 			compatible = "st,stm32-window-watchdog";
-			reg = <0x50003000 0x400>;
+			reg = <0x50003000 0x1000>;
 			clocks = <&rcc STM32_CLOCK_BUS_APB3 0x00000800>;
 			interrupts = <0 7>;
 			status = "disabled";