hammerhead: update prebuilt kernel

4aec175 net: ipv6: allow choosing optimistic addresses with use_optimistic

b/17769720 Don't use IP address from wrong interface while performing DAD
b/18609055 [VoLTE] VZW: Not making VoLte voice calls even when enabled. UI
	   showing LTE(IKXP-5640).

Change-Id: If43aa30687a72d49814f7f1b88e87f38430ddbd7
Signed-off-by: Iliyan Malchev <malchev@google.com>
1 file changed
tree: 5c8855562f0e4a387ae20a0851b710187fd71a9b
  1. zImage-dtb