arm64: dts: qcom: sa8775p-ride: add pin functions for ethernet0

Add the MDC and MDIO pin functions for ethernet0 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/20230622120142.218055-5-brgl@bgdev.plSigned-off-by: Bjorn Andersson <andersson@kernel.org>

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

@@ -371,6 +371,22 @@ &spi16 {
 };
 
 &tlmm {
+	ethernet0_default: ethernet0-default-state {
+		ethernet0_mdc: ethernet0-mdc-pins {
+			pins = "gpio8";
+			function = "emac0_mdc";
+			drive-strength = <16>;
+			bias-pull-up;
+		};
+
+		ethernet0_mdio: ethernet0-mdio-pins {
+			pins = "gpio9";
+			function = "emac0_mdio";
+			drive-strength = <16>;
+			bias-pull-up;
+		};
+	};
+
 	qup_uart10_default: qup-uart10-state {
 		pins = "gpio46", "gpio47";
 		function = "qup1_se3";