Merge "Fix license documentation: Add LICENSE file" into main am: 54d5b03902

Original change: https://android-review.googlesource.com/c/platform/external/elfutils/+/2927790

Change-Id: Ic3e8a622017756042310e2855ce3a9a3205df603
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>