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: 87489ec3 ("ARM: dts: imx: Add Y Soft IOTA Draco, Hydra and Ursa boards")
Cc: stable@vger.kernel.org
Signed-off-by: Michal Vokáč <michal.vokac@ysoft.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

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

@@ -38,7 +38,7 @@ &reg_usb_h1_vbus {
 };
 
 &switch_ports {
-	/delete-node/ port@2;
+	/delete-node/ port@3;
 };
 
 &touchscreen {