flounder: update kernel prebuilt (Aug MR2) (DO NOT MERGE) am: 310640f7c7  -s ours am: 7a10190817 am: aeb97e8f3e  -s ours am: bbe1eadbd6
am: ff2a59b8a1

Change-Id: I662ddfadbdfc3d33b415be47d1feb2b68a6b4183