ARM: dts: qs600: Add SD card detect support.

This patch adds SD card detect support.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Acked-by: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: Andy Gross <agross@codeaurora.org>

arch/arm/boot/dts/qcom-apq8064-cm-qs600.dts

@@ -29,6 +29,16 @@ sdcc4_pwrseq: sdcc4_pwrseq {
 	};
 
 	soc {
+		pinctrl@800000 {
+			card_detect: card_detect {
+				mux {
+					pins = "gpio26";
+					function = "gpio";
+					bias-disable;
+				};
+			};
+		};
+
 		rpm@108000 {
 			regulators {
 				vin_lvs1_3_6-supply = <&pm8921_s4>;
@@ -197,6 +207,9 @@ sdcc1: sdcc@12400000 {
 			sdcc3: sdcc@12180000 {
 				status = "okay";
 				vmmc-supply = <&v3p3_fixed>;
+				pinctrl-names	= "default";
+				pinctrl-0	= <&card_detect>;
+				cd-gpios	= <&tlmm_pinmux 26 GPIO_ACTIVE_LOW>;
 			};
 			/* WLAN */
 			sdcc4: sdcc@121c0000 {