The Volumio version for XU4 does not have a usable i2s interface.
But, as a side note: it is an excellent board for a USB DAC and a very suitable snapcast server in the currently (jan 2020) sold 9$ (!!) mc1 version.
Imagine a 2Ghz sbc for that money !!! see www.hardkernel.com.
Also note that the Odroid DACs only work on C1 and C2 as a HAT, on N2 you have to wire them…