ARM: dts: imx6qdl-sabresd: add accelerometer sensor support

Add accelerometer sensor mma8451 support on i2c1 bus.
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/imx6qdl-sabresd.dtsi

@@ -243,6 +243,15 @@ codec: wm8962@1a {
 		>;
 	};
 
+	accelerometer@1c {
+		compatible = "fsl,mma8451";
+		reg = <0x1c>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_i2c1_mma8451_int>;
+		interrupt-parent = <&gpio1>;
+		interrupts = <18 IRQ_TYPE_LEVEL_LOW>;
+	};
+
 	ov5642: camera@3c {
 		compatible = "ovti,ov5642";
 		pinctrl-names = "default";
@@ -522,6 +531,12 @@ MX6QDL_PAD_CSI0_DAT9__I2C1_SCL		0x4001b8b1
 			>;
 		};
 
+		pinctrl_i2c1_mma8451_int: i2c1mma8451intgrp {
+			fsl,pins = <
+				MX6QDL_PAD_SD1_CMD__GPIO1_IO18		0xb0b1
+			>;
+		};
+
 		pinctrl_i2c2: i2c2grp {
 			fsl,pins = <
 				MX6QDL_PAD_KEY_COL3__I2C2_SCL		0x4001b8b1