hammerhead: update prebuilt kernel

e7426c2 msm: vidc: update VENUS_BUFFER_SIZE query to include extradata

Linux version 3.4.0-ge7426c2 (android-build@vped7.mtv.corp.google.com)
(gcc version 4.8 (GCC) ) #1 SMP PREEMPT Wed May 27 07:24:08 UTC 2015
Linux version

Bug: 21327516
Change-Id: Ia22e16d0170a1727770e5625ded951bcd56c3ad3
Signed-off-by: Vineeta Srivastava <vsrivastava@google.com>
diff --git a/zImage-dtb b/zImage-dtb
index c960fa0..2dbca4d 100644
--- a/zImage-dtb
+++ b/zImage-dtb
Binary files differ