Update kernel headers to v3.18.3.

Bug: 19127803
Change-Id: I67fa0832322ddd0032d909476047578be052bcf2
diff --git a/libc/kernel/uapi/linux/ipv6.h b/libc/kernel/uapi/linux/ipv6.h
index bfe62cf..8f5aaa0 100644
--- a/libc/kernel/uapi/linux/ipv6.h
+++ b/libc/kernel/uapi/linux/ipv6.h
@@ -144,7 +144,8 @@
  DEVCONF_MLDV1_UNSOLICITED_REPORT_INTERVAL,
  DEVCONF_MLDV2_UNSOLICITED_REPORT_INTERVAL,
  DEVCONF_SUPPRESS_FRAG_NDISC,
- DEVCONF_MAX
+ DEVCONF_ACCEPT_RA_FROM_LOCAL,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+ DEVCONF_MAX
 };
 #endif