arm64: dts: qcom: x1e80100-vivobook-s15: fix PCIe4 PHY supply

The PCIe4 PHY is powered by vreg_l3i (not vreg_l3j) on the CRD reference
design so assume the same applies to the Asus Vivobook S15.

Fixes: d0e2f8f ("arm64: dts: qcom: Add device tree for ASUS Vivobook S 15")
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20240722095459.27437-6-johan+linaro@kernel.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>

arch/arm64/boot/dts/qcom/x1e80100-asus-vivobook-s15.dts

@@ -278,6 +278,13 @@
 		vdd-l3-supply = <&vreg_s1f_0p7>;
 		vdd-s1-supply = <&vph_pwr>;
 		vdd-s2-supply = <&vph_pwr>;
+
+		vreg_l3i_0p8: ldo3 {
+			regulator-name = "vreg_l3i_0p8";
+			regulator-min-microvolt = <880000>;
+			regulator-max-microvolt = <920000>;
+			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+		};
 	};
 
 	regulators-7 {
@@ -427,7 +434,7 @@
 };
 
 &pcie4_phy {
-	vdda-phy-supply = <&vreg_l3j_0p8>;
+	vdda-phy-supply = <&vreg_l3i_0p8>;
 	vdda-pll-supply = <&vreg_l3e_1p2>;
 
 	status = "okay";