grouper: update prebuilt kernel

71241c7 net/ping: handle protocol mismatching scenario

b/18512516 (moto APR) 9 panics at PC=ping_err+0x264/0x338
	   LR=ping_err+0x23c/0x338
Signed-off-by: Iliyan Malchev <malchev@google.com>

Change-Id: I8a14efb93d4b29b8da8a69678b9464186d173d89
diff --git a/kernel b/kernel
index 7aaead0..5fdb06d 100644
--- a/kernel
+++ b/kernel
Binary files differ