ARM: tegra: transformer-t30: bind Hall sensor

Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
diff --git a/arch/arm/dts/tegra30-asus-tf600t.dts b/arch/arm/dts/tegra30-asus-tf600t.dts
index 0615181..3ddd78b 100644
--- a/arch/arm/dts/tegra30-asus-tf600t.dts
+++ b/arch/arm/dts/tegra30-asus-tf600t.dts
@@ -1122,6 +1122,16 @@
 		clock-output-names = "pmic-oscillator";
 	};
 
+	extcon-keys {
+		compatible = "gpio-keys";
+
+		switch-dock-hall-sensor {
+			label = "Lid sensor";
+			gpios = <&gpio TEGRA_GPIO(BB, 6) GPIO_ACTIVE_LOW>;
+			linux,code = <SW_LID>;
+		};
+	};
+
 	gpio-keys {
 		compatible = "gpio-keys";
 
diff --git a/arch/arm/dts/tegra30-asus-transformer.dtsi b/arch/arm/dts/tegra30-asus-transformer.dtsi
index 766c783..03ba8fb 100644
--- a/arch/arm/dts/tegra30-asus-transformer.dtsi
+++ b/arch/arm/dts/tegra30-asus-transformer.dtsi
@@ -1150,6 +1150,16 @@
 		clock-output-names = "pmic-oscillator";
 	};
 
+	extcon-keys {
+		compatible = "gpio-keys";
+
+		switch-dock-hall-sensor {
+			label = "Lid sensor";
+			gpios = <&gpio TEGRA_GPIO(S, 6) GPIO_ACTIVE_LOW>;
+			linux,code = <SW_LID>;
+		};
+	};
+
 	gpio-keys {
 		compatible = "gpio-keys";