ARM: dts: aspeed: witherspoon: Enable vhub

Enable the virtual USB hub.
Signed-off-by: Eddie James <eajames@linux.ibm.com>
Signed-off-by: Joel Stanley <joel@jms.id.au>

arch/arm/boot/dts/aspeed-bmc-opp-witherspoon.dts

@@ -592,3 +592,7 @@ &ibt {
 &adc {
 	status = "okay";
 };
+
+&vhub {
+	status = "okay";
+};