dts: imx8qxp-mek: Add PHY post reset delay

PHY cannot be detected unless we wait about 150 ms.

Signed-off-by: Andrejs Cainikovs <andrejs.cainikovs@netmodule.com>
Reviewed-by: Anatolij Gustschin <agust@denx.de>
Reviewed-by: Stefano Babic <sbabic@denx.de>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>

arch/arm/dts/fsl-imx8qxp-mek.dts

@@ -224,6 +224,7 @@
 	status = "okay";
 	phy-reset-gpios = <&pca9557_a 4 GPIO_ACTIVE_LOW>;
 	phy-reset-duration = <10>;
+	phy-reset-post-delay = <150>;
 
 	mdio {
 		#address-cells = <1>;