arm64: dts: qcom: sm8450-hdk: add SDHCI for microSD

The HDK8450 has microSD card slot.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20221026200357.391635-4-krzysztof.kozlowski@linaro.org

arch/arm64/boot/dts/qcom/sm8450-hdk.dts

@@ -394,8 +394,27 @@ &qupv3_id_0 {
 	status = "okay";
 };
 
+&sdhc_2 {
+	cd-gpios = <&tlmm 92 GPIO_ACTIVE_HIGH>;
+	pinctrl-names = "default", "sleep";
+	pinctrl-0 = <&sdc2_default_state &sdc2_card_det_n>;
+	pinctrl-1 = <&sdc2_sleep_state &sdc2_card_det_n>;
+	vmmc-supply = <&vreg_l9c_2p96>;
+	vqmmc-supply = <&vreg_l6c_1p8>;
+	no-sdio;
+	no-mmc;
+	status = "okay";
+};
+
 &tlmm {
 	gpio-reserved-ranges = <28 4>, <36 4>;
+
+	sdc2_card_det_n: sd-card-det-n-state {
+		pins = "gpio92";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-pull-up;
+	};
 };
 
 &uart7 {