How to generate ssdt-ec-usbx?

Hey guys. Taking my first crack at opencore. Running an i5 9400, Gigabyte z390-m gaming motherboard, rx 560. When I run the ssdttime app, it generates ssdt-ec.aml, but the vanilla guide references ssdt-ec-usbx.aml when doing skylake builds. How do I generate or download ssdt-ec-usbx? I’d be stoked for any pointers!!

submitted by /u/licorice_whip
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