arm64: tegra: Fix power key interrupt type on Jetson TX2

In order for the correct interrupt type to be configured, the event
action for the power key needs to be "asserted".
Signed-off-by: Thierry Reding <treding@nvidia.com>

arch/arm64/boot/dts/nvidia/tegra186-p2771-0000.dts

@@ -2,6 +2,7 @@
 /dts-v1/;
 
 #include <dt-bindings/input/linux-event-codes.h>
+#include <dt-bindings/input/gpio-keys.h>
 
 #include "tegra186-p3310.dtsi"
 
@@ -121,6 +122,7 @@ power {
 			linux,input-type = <EV_KEY>;
 			linux,code = <KEY_POWER>;
 			debounce-interval = <10>;
+			wakeup-event-action = <EV_ACT_ASSERTED>;
 			wakeup-source;
 		};