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

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

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: Ic5a575726d6390a7e87f588e7cd3aac591133fc6