hammerhead: update prebuilt kernel

cd2743b cpufreq: Always allow update of user policy
1c89de0 cpufreq: Save user policy min/max instead of policy min/max during hotplug

Linux version 3.4.0-gcd2743b (android-build@vpbs1.mtv.corp.google.com) (gcc version 4.7 (GCC) ) #1 SMP PREEMPT Mon Oct 13 18:14:11 UTC 2014

Bug: 17889870
Change-Id: Id22aab38a6341e6a686f90b270de02b69e6ee581
diff --git a/zImage-dtb b/zImage-dtb
index a6925ac..f42b7b9 100644
--- a/zImage-dtb
+++ b/zImage-dtb
Binary files differ