hammerhead: update prebuilt kernel [DO NOT MERGE]

b116f9a idr: fix a subtle bug in idr_get_next()

Bug: 24145311

Linux version 3.4.0-gb116f9a (android-build@wpiu15.hot.corp.google.com)
(gcc version 4.8 (GCC) ) #1 SMP PREEMPT Tue Sep 1 20:54:28 UTC 2015

Change-Id: Icfec1b4f180b415e26aa5353f644e3879ef51968
Signed-off-by: Patrick Tjin <pattjin@google.com>
diff --git a/zImage-dtb b/zImage-dtb
index be91bfc..5660ccc 100755
--- a/zImage-dtb
+++ b/zImage-dtb
Binary files differ