hammerhead: update prebuilt kernel

84767f8 msm: vidc: Enable session priority support.

Linux version 3.4.0-g84767f8 (android-build@wped27.hot.corp.google.com)
(gcc version 4.8 (GCC) ) #1 SMP PREEMPT Thu Jun 4 20:23:53 UTC 2015
Linux version

Bug: 20131548
Change-Id: I253d031d68b51be840f6c87b717a90d386e622f6
Signed-off-by: Vineeta Srivastava <vsrivastava@google.com>
diff --git a/zImage-dtb b/zImage-dtb
index f7aa5fd..88dec91 100644
--- a/zImage-dtb
+++ b/zImage-dtb
Binary files differ