ARM: dts: db600c: Add eMMC and SD card support

This patch adds eMMC and SD card support with card detect and adding
required regulators.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>

arch/arm/boot/dts/qcom-apq8064-arrow-db600c-pins.dtsi

+&tlmm_pinmux {
+	card_detect: card-detect {
+		mux {
+			pins = "gpio26";
+			function = "gpio";
+			bias-disable;
+		};
+	};
+};

arch/arm/boot/dts/qcom-apq8064-arrow-db600c.dts

 #include "qcom-apq8064-v2.0.dtsi"
+#include "qcom-apq8064-arrow-db600c-pins.dtsi"
+#include <dt-bindings/gpio/gpio.h>
 
 / {
 	model = "Arrow Electronics, APQ8064 DB600c";
@@ -69,6 +71,20 @@ s7 {
 					regulator-max-microvolt = <1300000>;
 					qcom,switch-mode-frequency = <3200000>;
 				 };
+
+				l5 {
+					regulator-min-microvolt = <2750000>;
+					regulator-max-microvolt = <3000000>;
+					bias-pull-down;
+					regulator-boot-on;
+					regulator-always-on;
+				};
+
+				l6 {
+					regulator-min-microvolt = <2950000>;
+					regulator-max-microvolt = <2950000>;
+					bias-pull-down;
+				};
 			};
 		};
 
@@ -94,5 +110,23 @@ serial@16640000 {
 				pinctrl-0 = <&gsbi7_uart_2pins>;
 			};
 		};
+
+		amba {
+			/* eMMC */
+			sdcc@12400000 {
+				status = "okay";
+				vmmc-supply = <&pm8921_l5>;
+				vqmmc-supply = <&pm8921_s4>;
+			};
+
+			/* External micro SD card */
+			sdcc@12180000 {
+				status = "okay";
+				vmmc-supply = <&pm8921_l6>;
+				pinctrl-names	= "default";
+				pinctrl-0	= <&card_detect>;
+				cd-gpios	= <&tlmm_pinmux 26 GPIO_ACTIVE_HIGH>;
+			};
+		};
 	};
 };