hammerhead: update prebuilt kernel

532cc44 mmc: workaround for read ahead issue (https://partner-android-review.googlesource.com/380189)

Linux version 3.4.0-g532cc44 (android-build@wpiu9.hot.corp.google.com)
(gcc version 4.8 (GCC) ) #1 SMP PREEMPT Thu Sep 10 20:02:24 UTC 2015

Bug: 18759095
Change-Id: Ida6d87a9b80ebc3318c07bf7f2760dc02aa688a3
Signed-off-by: Thierry Strudel <tstrudel@google.com>
diff --git a/zImage-dtb b/zImage-dtb
index df25b2f..117bc4d 100644
--- a/zImage-dtb
+++ b/zImage-dtb
Binary files differ