arm64: dts: qcom: sm8550-qrd: add missing PCIE1 PHY AUX clock frequency

The SM8550 DTSI defines a fixed PCIE1 PHY AUX clock and expects boards
to define frequency.  Use the same as in MTP8550 to fix:

  sm8550-qrd.dtb: pcie-1-phy-aux-clk: 'clock-frequency' is a required property
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230416123730.300863-5-krzysztof.kozlowski@linaro.org

arch/arm64/boot/dts/qcom/sm8550-qrd.dts

@@ -521,6 +521,10 @@ &pm8550b_eusb2_repeater {
 	vdd3-supply = <&vreg_l5b_3p1>;
 };
 
+&pcie_1_phy_aux_clk {
+	clock-frequency = <1000>;
+};
+
 &qupv3_id_0 {
 	status = "okay";
 };