arm64: dts: qcom: x1e001de-devkit: Describe USB retimers resets pin configs

Currently, on the X Elite Devkit, the pin configuration of the reset
gpios for all three PS8830 USB retimers are left configured by the
bootloader.

Fix that by describing their pin configuration.

Fixes: 019e1ee32f ("arm64: dts: qcom: x1e001de-devkit: Enable external DP support")
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Signed-off-by: Abel Vesa <abel.vesa@linaro.org>
Reviewed-by: Johan Hovold <johan+linaro@kernel.org>
Link: https://lore.kernel.org/r/20250422-x1e001de-devkit-dts-fix-retimer-gpios-v2-1-0129c4f2b6d7@linaro.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>

arch/arm64/boot/dts/qcom/x1e001de-devkit.dts

@@ -789,6 +789,9 @@
 
 		reset-gpios = <&tlmm 185 GPIO_ACTIVE_LOW>;
 
+		pinctrl-0 = <&rtmr2_default>;
+		pinctrl-names = "default";
+
 		orientation-switch;
 		retimer-switch;
 
@@ -843,6 +846,9 @@
 
 		reset-gpios = <&pm8550_gpios 10 GPIO_ACTIVE_LOW>;
 
+		pinctrl-0 = <&rtmr0_default>;
+		pinctrl-names = "default";
+
 		retimer-switch;
 		orientation-switch;
 
@@ -897,6 +903,9 @@
 
 		reset-gpios = <&tlmm 176 GPIO_ACTIVE_LOW>;
 
+		pinctrl-0 = <&rtmr1_default>;
+		pinctrl-names = "default";
+
 		retimer-switch;
 		orientation-switch;
 
@@ -1018,6 +1027,15 @@
 };
 
 &pm8550_gpios {
+	rtmr0_default: rtmr0-reset-n-active-state {
+		pins = "gpio10";
+		function = "normal";
+		power-source = <1>; /* 1.8 V */
+		bias-disable;
+		input-disable;
+		output-enable;
+	};
+
 	usb0_3p3_reg_en: usb0-3p3-reg-en-state {
 		pins = "gpio11";
 		function = "normal";
@@ -1205,6 +1223,20 @@
 		};
 	};
 
+	rtmr1_default: rtmr1-reset-n-active-state {
+		pins = "gpio176";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-disable;
+	};
+
+	rtmr2_default: rtmr2-reset-n-active-state {
+		pins = "gpio185";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-disable;
+	};
+
 	rtmr1_1p15_reg_en: rtmr1-1p15-reg-en-state {
 		pins = "gpio188";
 		function = "gpio";