arm64: dts: qcom: msm8916-samsung-a5u: Add touchscreen

A5U uses a Melfas MMS345L touchscreen that is connected to
blsp_i2c5. Add it to the device tree.
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Link: https://lore.kernel.org/r/20200426140642.204395-5-stephan@gerhold.netSigned-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

arch/arm64/boot/dts/qcom/msm8916-samsung-a5u-eur.dts

@@ -9,8 +9,43 @@ / {
 	compatible = "samsung,a5u-eur", "qcom,msm8916";
 };
 
+&blsp_i2c5 {
+	status = "okay";
+
+	touchscreen@48 {
+		compatible = "melfas,mms345l";
+
+		reg = <0x48>;
+		interrupt-parent = <&msmgpio>;
+		interrupts = <13 IRQ_TYPE_EDGE_FALLING>;
+
+		touchscreen-size-x = <720>;
+		touchscreen-size-y = <1280>;
+
+		avdd-supply = <&reg_vdd_tsp>;
+		vdd-supply = <&pm8916_l6>;
+
+		pinctrl-names = "default";
+		pinctrl-0 = <&ts_int_default>;
+	};
+};
+
 &pronto {
 	iris {
 		compatible = "qcom,wcn3680";
 	};
 };
+
+&msmgpio {
+	ts_int_default: ts-int-default {
+		pinmux {
+			function = "gpio";
+			pins = "gpio13";
+		};
+		pinconf {
+			pins = "gpio13";
+			drive-strength = <2>;
+			bias-disable;
+		};
+	};
+};