arm64: dts: qcom: sa8775p-ride: enable the SerDes PHY

Enable the internal PHY on sa8775p-ride.
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Tested-by: Andrew Halaney <ahalaney@redhat.com>
Link: https://lore.kernel.org/r/20230622120142.218055-4-brgl@bgdev.plSigned-off-by: Bjorn Andersson <andersson@kernel.org>

arch/arm64/boot/dts/qcom/sa8775p-ride.dts

@@ -355,6 +355,11 @@ &qupv3_id_2 {
 	status = "okay";
 };
 
+&serdes0 {
+	phy-supply = <&vreg_l5a>;
+	status = "okay";
+};
+
 &sleep_clk {
 	clock-frequency = <32764>;
 };