marlin: update prebuilt kernel [ DO NOT MERGE ]

cfb9f42 input: touchscreen: Synaptics: Write LPWG register on reinit

Linux version 3.18.31-gcfb9f42 (android-build@wpef6.hot.corp.google.com)
(gcc version 4.9.x 20150123 (prerelease) (GCC) )
 #1 SMP PREEMPT Thu Oct 27 18:11:20 UTC 2016 (master)

Bug: 32384410
Change-Id: I626c35c3c43c4753ce39214e6752a867eddfc900
Source-Branch: android-msm-marlin-3.18
Signed-off-by: Siqi Lin <siqilin@google.com>
(cherry picked from commit ddb8e1a1aba1cbf8718008ee954c5fa00838119a)
diff --git a/Image.gz-dtb b/Image.gz-dtb
index c046739..b14c157 100644
--- a/Image.gz-dtb
+++ b/Image.gz-dtb
Binary files differ