ARM: dts: imx53-qsb: Describe the esdhc1 card detect pin

The micro SD card slot uses GPIO3_13 as card detect pin, so describe
it in the devicetree.

This was noticed when converting imx53-qsb board to driver model
in U-Boot as the micro SD card was not getting detected.
Signed-off-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/imx53-qsb-common.dtsi

@@ -142,6 +142,7 @@ &cpu0 {
 &esdhc1 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_esdhc1>;
+	cd-gpios = <&gpio3 13 GPIO_ACTIVE_LOW>;
 	status = "okay";
 };
 
@@ -209,6 +210,7 @@ MX53_PAD_SD1_DATA2__ESDHC1_DAT2		0x1d5
 				MX53_PAD_SD1_DATA3__ESDHC1_DAT3		0x1d5
 				MX53_PAD_SD1_CMD__ESDHC1_CMD		0x1d5
 				MX53_PAD_SD1_CLK__ESDHC1_CLK		0x1d5
+				MX53_PAD_EIM_DA13__GPIO3_13		0xe4
 			>;
 		};