shamu: update prebuilt kernel

8c0b9b2 net: bcmdhd: wireless: Fix batch scan timing out

b/17041430 Following Extreme logspam from wifihal
b/17021370 Unresponsive while screen on
Signed-off-by: Iliyan Malchev <malchev@google.com>

Change-Id: I7ddca82a86ecfea1e7873d2c948eb994b100cfce

Conflicts:
	zImage-dtb
diff --git a/zImage-dtb b/zImage-dtb
index 8fbe3bd..21156b7 100644
--- a/zImage-dtb
+++ b/zImage-dtb
Binary files differ