am 6c4d2120: (-s ours) am 7f979d61: (-s ours) am abbe8ba3: (-s ours) Updating SDK prebuilts to LKY61. DO NOT MERGE ANYWHERE

* commit '6c4d2120e04e6cf481a269b473b9f34d1e3bd8ff':
  Updating SDK prebuilts to LKY61. DO NOT MERGE ANYWHERE