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

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

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I7e529d385a2f409434b89bed5e21378f5457ada9