[LSC] Add LOCAL_LICENSE_KINDS to external/ethtool am: 025eb9d25f

Original change: https://android-review.googlesource.com/c/platform/external/ethtool/+/1588892

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: Ie4f1049d6f76e1a28468c745272f992ce8603ce8