ARM: mvebu: Correct unit address for linksys

The USB2 port for Armada 38x is defined to be at 58000, not at
50000.

Cc: <[e-mail]>
Fixes: 2d0a7addbd10 ("ARM: Kirkwood: Add support for many Synology NAS devices")
Signed-off-by: Patrick Uiterwijk <[e-mail]>
Acked-by: Imre Kaloz <[e-mail]>
Signed-off-by: Gregory CLEMENT <[e-mail]>

arch/arm/boot/dts/armada-385-linksys.dtsi

···
 			};
 
 			/* USB part of the eSATA/USB 2.0 port */
-			usb@50000 {
+			usb@58000 {
 				status = "okay";
 			};