ARM: tegra: nyan: Add gpio-restart node

The Nyan Chromebooks have a GPIO line dedicated to restarting the
system. Using this line will make sure that the TPM is restarted as
well.
Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

arch/arm/boot/dts/tegra124-nyan.dtsi

@@ -683,6 +683,12 @@ sound {
 		nvidia,mic-det-gpios =
 				<&gpio TEGRA_GPIO(R, 7) GPIO_ACTIVE_HIGH>;
 	};
+
+	gpio-restart {
+		compatible = "gpio-restart";
+		gpios = <&gpio TEGRA_GPIO(I, 5) GPIO_ACTIVE_LOW>;
+		priority = <200>;
+	};
 };
 
 #include "cros-ec-keyboard.dtsi"