Why Clover if you use OZ? Here is a patched DSDT with LayoutID set to LayoutID1: DSDT.aml place it on your EFI Partition under Efi/Oz/Acpi/Load also place AppleALC-OZM.kext taken from here AppleALC - der dynamische AppleHDA Patcher - immer aktuell and Lilu.kext taken from here: Lilu - Generic kext patcher (neue Grundlage für AppleALC 1.1.x und Shiki 2.x.x) into /Efi/Oz/Darwin/Extensions/Common/ and thats it sound should work afterwards.
Once, I used Clover.
I have placed the files on the right dir , and I place AppleIntelE1000e.kext on /efi/oz/darwin/extensions/common/ for a test. AppleIntelE1000e.kext can not load.
Now I will delete the Oz dir and then reflash the rom ,maybe it will work afterwards?