arm64: dts: imx8mq-evk: Enable SNVS power key

Enable SNVS power key for i.MX8MQ EVK board.
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm64/boot/dts/freescale/imx8mq-evk.dts

@@ -242,6 +242,10 @@ &pgc_gpu {
 	power-supply = <&sw1a_reg>;
 };
 
+&snvs_pwrkey {
+	status = "okay";
+};
+
 &uart1 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_uart1>;