ARM: dts: imx6sx-sdb: Add headphone detection for sound card

Headphone detection is triggered by GPIO, then driver can
switch between speaker and headphone.
Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/imx6sx-sdb.dtsi

@@ -153,6 +153,8 @@ reg_can_stby: regulator-can-stby {
 
 	sound {
 		compatible = "fsl,imx6sx-sdb-wm8962", "fsl,imx-audio-wm8962";
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_hp>;
 		model = "wm8962-audio";
 		ssi-controller = <&ssi2>;
 		audio-codec = <&codec>;
@@ -165,6 +167,7 @@ sound {
 			"IN3R", "AMIC";
 		mux-int-port = <2>;
 		mux-ext-port = <6>;
+		hp-det-gpio = <&gpio1 17 GPIO_ACTIVE_LOW>;
 	};
 
 	panel {
@@ -468,6 +471,12 @@ MX6SX_PAD_CSI_DATA05__GPIO1_IO_19 0x17059
 			>;
 		};
 
+		pinctrl_hp: hpgrp {
+			fsl,pins = <
+				MX6SX_PAD_CSI_DATA03__GPIO1_IO_17 0x17059
+			>;
+		};
+
 		pinctrl_i2c1: i2c1grp {
 			fsl,pins = <
 				MX6SX_PAD_GPIO1_IO01__I2C1_SDA		0x4001b8b1