shamu: update prebuilt kernel

18d7678 net: wireless: bcmdhd disable async suspend mode

Bug: 16612712
Change-Id: I3c115ebd1fec8f010b6887471a6a3dfc0f62b567
diff --git a/zImage-dtb b/zImage-dtb
index a075847..3a10882 100644
--- a/zImage-dtb
+++ b/zImage-dtb
Binary files differ