arm64: dts: fsl: imx8mq: add the snvs power key node

Add a node for the snvs power key, "disabled" by default.
Signed-off-by: Angus Ainslie (Purism) <angus@akkea.ca>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm64/boot/dts/freescale/imx8mq.dtsi

@@ -8,6 +8,7 @@
 #include <dt-bindings/power/imx8mq-power.h>
 #include <dt-bindings/reset/imx8mq-reset.h>
 #include <dt-bindings/gpio/gpio.h>
+#include "dt-bindings/input/input.h"
 #include <dt-bindings/interrupt-controller/arm-gic.h>
 #include <dt-bindings/thermal/thermal.h>
 #include "imx8mq-pinfunc.h"
@@ -463,6 +464,15 @@ snvs_rtc: snvs-rtc-lp{
 					interrupts = <GIC_SPI 19 IRQ_TYPE_LEVEL_HIGH>,
 						<GIC_SPI 20 IRQ_TYPE_LEVEL_HIGH>;
 				};
+
+				snvs_pwrkey: snvs-powerkey {
+					compatible = "fsl,sec-v4.0-pwrkey";
+					regmap = <&snvs>;
+					interrupts = <GIC_SPI 4 IRQ_TYPE_LEVEL_HIGH>;
+					linux,keycode = <KEY_POWER>;
+					wakeup-source;
+					status = "disabled";
+				};
 			};
 
 			clk: clock-controller@30380000 {