bullhead: update prebuilt kernel

ef93fe9 Revert "REVERT ME: dma-buf: Add more info to debugfs hooks."
30b6498 mdss: mdp3: Validate input from userspace
cd932bdb Revert "mdss: mdp3: Validate input from userspace"
7872047 bullhead_defconfig: disable CONFIG_PFT as it is unsupported

Linux version 3.10.73-gef93fe9 (android-build@vpee1.mtv.corp.google.com)
(gcc version 4.9.x-google 20140827 (prerelease) (GCC) )
 #1 SMP PREEMPT Fri May 20 20:48:13 UTC 2016

Bug: 28588434
Bug: 28602014
Bug: 28883497
Change-Id: I79859b80fbd08829a387acca0653a9a7afbc1e78
Signed-off-by: Thierry Strudel <tstrudel@google.com>
diff --git a/Image.gz-dtb b/Image.gz-dtb
index 2da5779..e4d3635 100644
--- a/Image.gz-dtb
+++ b/Image.gz-dtb
Binary files differ