[LSC] Add LOCAL_LICENSE_KINDS to external/libxaac am: 39d57e0f7b

Original change: https://android-review.googlesource.com/c/platform/external/libxaac/+/1588651

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: Ie12bd9da045c95ef3b0408b3e24ee138fbdf596c