[LSC] Add LOCAL_LICENSE_KINDS to external/libunwind_llvm am: 1832d5d90c am: 1e7779155d am: ff907ea03f

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

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I42e1e75fbad60077118c9c757fe4efeca50874aa