Create an initial version of libfdt fuzzer. am: 49a2e71ae0 am: 85189c3a6a am: 1511571160 am: 8c0093a65c

Original change: https://android-review.googlesource.com/c/platform/external/dtc/+/1987187

Change-Id: I51af5efbec769845d96dd8434c75f0580d2bdedf