[LSC] Add LOCAL_LICENSE_KINDS to external/libunwind_llvm am: 1832d5d90c

Original change: https://android-review.googlesource.com/c/platform/external/libunwind_llvm/+/1588618

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I892d4f107a5708d3f33f79af73e71819c79624e5