ARM: imx: imx8mn-*-evk: add qca, disable-smarteee phy node

To be in sync with the linux devicetree add the disable-smarteee
property.

Signed-off-by: Heiko Thiery <heiko.thiery@gmail.com>
Tested-by: Marek Vasut <marex@denx.de> # 8MNANOD4-EVK
diff --git a/arch/arm/dts/imx8mn-evk.dtsi b/arch/arm/dts/imx8mn-evk.dtsi
index ed86544..fd253f0 100644
--- a/arch/arm/dts/imx8mn-evk.dtsi
+++ b/arch/arm/dts/imx8mn-evk.dtsi
@@ -65,6 +65,7 @@
 			reg = <0>;
 			reset-gpios = <&gpio4 22 GPIO_ACTIVE_LOW>;
 			reset-assert-us = <10000>;
+			qca,disable-smarteee;
 			vddio-supply = <&vddio>;
 
 			vddio: vddio-regulator {