[LSC] Add LOCAL_LICENSE_KINDS to external/libbackup am: aeba4c0b8e am: 9e004583de am: e12ec3530c

Original change: https://android-review.googlesource.com/c/platform/external/libbackup/+/1588863

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I46d8b833eb88d2f9d9aba0a76d27c82fb7bd9c0f