bullhead: update prebuilt kernel

00b2d9c bullhead_defconfig: enable option for iotop to work
bf54520 msm-3.10: For every frame disabled, report drop

Linux version 3.10.73-g00b2d9c (android-build@wpiu7.hot.corp.google.com)
(gcc version 4.9.x-google 20140827 (prerelease) (GCC) ) #1 SMP PREEMPT Wed Mar 16 01:41:36 UTC 2016

Bug: 25149843
Change-Id: I74adde68871fedcb2285c6e8a8edae49e5a5367e
Signed-off-by: Thierry Strudel <tstrudel@google.com>
diff --git a/Image.gz-dtb b/Image.gz-dtb
index bbff7a6..02f517e 100644
--- a/Image.gz-dtb
+++ b/Image.gz-dtb
Binary files differ