arm64: dts: qcom: msm8998-mtp: Add external SD

The externally accessible SD card slot on the MTP is driven by SDCC2.
Wire it up for use.
Signed-off-by: Jeffrey Hugo <jhugo@codeaurora.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>

arch/arm64/boot/dts/qcom/msm8998-mtp.dtsi

@@ -245,3 +245,15 @@ vreg_bob: bob {
 &tlmm {
 	gpio-reserved-ranges = <0 4>, <81 4>;
 };
+
+&sdhc2 {
+	status = "okay";
+	cd-gpios = <&tlmm 95 GPIO_ACTIVE_LOW>;
+
+	vmmc-supply = <&vreg_l21a_2p95>;
+	vqmmc-supply = <&vreg_l13a_2p95>;
+
+	pinctrl-names = "default", "sleep";
+	pinctrl-0 = <&sdc2_clk_on  &sdc2_cmd_on  &sdc2_data_on  &sdc2_cd_on>;
+	pinctrl-1 = <&sdc2_clk_off &sdc2_cmd_off &sdc2_data_off &sdc2_cd_off>;
+};

arch/arm64/boot/dts/qcom/msm8998.dtsi

@@ -3,6 +3,7 @@
 
 #include <dt-bindings/interrupt-controller/arm-gic.h>
 #include <dt-bindings/clock/qcom,gcc-msm8998.h>
+#include <dt-bindings/gpio/gpio.h>
 
 / {
 	interrupt-parent = <&intc>;