Revert "libufdt: device tree overlay via unflattening FDT" am: eeaff8f66f
am: 6487f1c12b

Change-Id: Ic66f9ce67abb049a7fd71a8667414eaf15bb7b01
tree: 4b825dc642cb6eb9a060e54bf8d69288fbee4904

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