shamu: update prebuilt kernel

b9dc388 net: wireless: bcmdhd: check packet length for event messages

Bug: 25306181
Bug: 25682871

Linux version 3.10.40-gb9dc388 (android-build@wped16.hot.corp.google.com)
(gcc version 4.8 (GCC) ) #1 SMP PREEMPT Thu Dec 10 05:50:08 UTC 2015

Change-Id: I6f3c907da7a161f0c016772f5288b53435f5d0e4
Signed-off-by: Patrick Tjin <pattjin@google.com>
diff --git a/zImage-dtb b/zImage-dtb
index 3200544..727a37b 100644
--- a/zImage-dtb
+++ b/zImage-dtb
Binary files differ