shamu: update prebuilt kernel

a8b6f27 net : wireless: bcmdhd remove skb_orphan due to side effect
2696bac msm: display: release kickoff before fence waiting
964fc56 msm: display: set up vsync_retire_handler in commit thread

Bug: 16716038
Change-Id: If2fbaecc587db94c0cb142e74946042bfd6fd3dc
diff --git a/zImage-dtb b/zImage-dtb
index c27065a..cee2508 100644
--- a/zImage-dtb
+++ b/zImage-dtb
Binary files differ