hammerhead: update prebuilt kernel

    7e3418e neigh: Better handling of transition to NUD_PROBE state

Linux version 3.4.0-g7e3418e (android-build@vpeb3.mtv.corp.google.com)
(gcc version 4.8 (GCC) ) #1 SMP PREEMPT Mon May 25 03:52:52 UTC 2015

Bug: 18581716
Change-Id: I2d5dbcbe1d4cd907f73939007f9a5b7490390ff1
diff --git a/zImage-dtb b/zImage-dtb
index f60696f..c960fa0 100644
--- a/zImage-dtb
+++ b/zImage-dtb
Binary files differ