hammerhead: update prebuilt kernel

9615bf5 net: wireless: bcmdhd: Fix Batch scan get bug
ed30fdf net: wireless: bcmdhd: Fix batch scan timing out
4bedad1 net: wireless: bcmdhd: Check evt data length before processing
456b7e5 net: wireless: bcmdhd: 15395235 16510235 & 16803503 fixes
94a8b0d wireless: Remove chatty prints from vendor command

b/15395235 Wifi did not switch to 2.4G before disconnecting
b/16510235 wifi_get_cached_scan_results doesn't return any results after a single scan
b/16803503 More RTT driver/HAL issues
b/17021370 WiFi wedges the system server (was "shamu unresponsive while screen on")
Signed-off-by: Iliyan Malchev <malchev@google.com>

Change-Id: Iea82dadea39c4f66497a99e968fe2afb5caed601
diff --git a/zImage-dtb b/zImage-dtb
index c5ae673..dcdf072 100644
--- a/zImage-dtb
+++ b/zImage-dtb
Binary files differ