[LSC] Add LOCAL_LICENSE_KINDS to external/libcxx am: e120486753 am: 14afc3bb1d am: 0898e66466 am: 2ea96ccab9

Original change: https://android-review.googlesource.com/c/platform/external/libcxx/+/1588641

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: Icd53c13ee8eb2423aa3cfc2fe93d644d8402218a