[LSC] Add LOCAL_LICENSE_KINDS to external/exoplayer am: 5551238e47

Original change: https://android-review.googlesource.com/c/platform/external/exoplayer/+/1588862

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I233745cdd7c8430e5be5a5535f36cf26c2d6bf6f