arm64: dts: imx952-evk: Enable wdog3

Enable wdog3 to allow System manager reset Linux.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

Author: MrVan

arch/arm64/boot/dts/freescale/imx952-evk.dts

@@ -314,6 +314,11 @@
 	status = "okay";
 };
 
+&wdog3 {
+	fsl,ext-reset-output;
+	status = "okay";
+};
+
 &scmi_iomuxc {
 	pinctrl_lpi2c2: lpi2c2grp {
 		fsl,pins = <