So, I added the following on my config.plist and I still can't get the sound to work:
<key>PciRoot(0x0)/Pci(0x1F,0x3)</key>
<dict>
<key>AAPL,slot-name</key>
<string>Internal@0,31,3</string>
<key>device-id</key>
<data>
cJ0AAA==
</data>
<key>device_type</key>
<string>Audio device</string>...