Yes you can use a hub, maybe some additional kernel modules are necessary.
As an example I already used this one Original Smartphone & Handy Zubehör | Samsung
that also enbales a ethernet connection, it is based on the Lan9512, so I need to include this kernel module.
I suppose a normal USB Hub should work out of the box.
You can draw up to 500 mA from the USB Port of the edison, if this is enough you won't need an external source.