hammerhead: update prebuilt kernel [DO NOT MERGE]

bebb36b idr: fix a subtle bug in idr_get_next()

Linux version 3.4.0-gbebb36b (android-build@vpbs1.mtv.corp.google.com)
(gcc version 4.7 (GCC) ) #1 SMP PREEMPT Tue Mar 10 18:17:45 UTC 2015

Bug: 19665182
Bug: 18069309
Bug: 19236185

Change-Id: Iae342bdb0bea11d2522647f940013fc3ab395775
Signed-off-by: Patrick Tjin <pattjin@google.com>
diff --git a/zImage-dtb b/zImage-dtb
index 4705d07..027a5f5 100755
--- a/zImage-dtb
+++ b/zImage-dtb
Binary files differ