hammerhead: update prebuilt kernel

a133cb7 ARM: hammerhead: turn off android logger
929fecf tcp: fix FIONREAD/SIOCINQ
fcde075 arm/dt: msm8974: Enable Microphone Activity Detection

Bug: 15384806
Change-Id: I153459bf7995ae1c73bdcd3aa8019e940d382c90
diff --git a/zImage-dtb b/zImage-dtb
index bce28e6..655b8c5 100644
--- a/zImage-dtb
+++ b/zImage-dtb
Binary files differ