Emulator: update kernel to commit 843a2cd03

Bug: 37302997

Test: emulator can boot up
commit 843a2cd031bdcfe264a8f0e1db223cff0738aab3
Author: Yahan Zhou <yahan@google.com>
Date:   Wed Apr 19 10:47:42 2017 -0700
Update emulator kernels
kernel-n-dev-android-goldfish-3.18-x86_64 - build: 3923892
kernel-n-dev-android-goldfish-3.18-x86 - build: 3923895

Change-Id: I45a5bbe674a97b2a371a64a32182908e3d523a7f
(cherry picked from commit 91551d207d710011d884d87e83750475d6ca2858)
(cherry picked from commit 4d365a9f8131e285bca91a1a6a807135f79ad0d7)
diff --git a/x86/3.18/kernel-qemu2 b/x86/3.18/kernel-qemu2
index 90b65be..7e0c348 100644
--- a/x86/3.18/kernel-qemu2
+++ b/x86/3.18/kernel-qemu2
Binary files differ
diff --git a/x86_64/3.18/kernel-qemu2 b/x86_64/3.18/kernel-qemu2
index e39dd3e..b8d643f 100644
--- a/x86_64/3.18/kernel-qemu2
+++ b/x86_64/3.18/kernel-qemu2
Binary files differ