ARM: dts: imx6dl-yapp4: Fix Ursa board Ethernet connection

The Y Soft yapp4 platform supports up to two Ethernet ports.
The Ursa board though has only one Ethernet port populated and that is
the port@2. Since the introduction of this platform into mainline a wrong
port was deleted and the Ethernet could never work. Fix this by deleting
the correct port node.

Fixes: 87489ec3a77f ("ARM: dts: imx: Add Y Soft IOTA Draco, Hydra and Ursa boards")
Cc: [e-mail]
Signed-off-by: Michal Vokáč <[e-mail]>
Signed-off-by: Shawn Guo <[e-mail]>

arch/arm/boot/dts/imx6dl-yapp4-ursa.dts

···
 };
 
 &switch_ports {
-	/delete-node/ port@2;
+	/delete-node/ port@3;
 };
 
 &touchscreen {