flounder: update kernel prebuilt (Oct MR2) (DO NOT MERGE) am: f76c52bbae -s ours am: 226d8f3d31 am: 2704efd084 -s ours am: 9f1f6253d8 am: c47012a709 am: 810bd266c3 Change-Id: I5fc048429422a7b9217933b27b1efabde52fe50d