Update to kernel headers v4.12.3.

Test: NA
Change-Id: Iee3d607e8a0fe866ffa1f123308af0713719ea29
diff --git a/original/uapi/linux/ipv6.h b/original/uapi/linux/ipv6.h
index eaf65dc..2ae5917 100644
--- a/original/uapi/linux/ipv6.h
+++ b/original/uapi/linux/ipv6.h
@@ -182,6 +182,9 @@
 	DEVCONF_SEG6_ENABLED,
 	DEVCONF_SEG6_REQUIRE_HMAC,
 	DEVCONF_ENHANCED_DAD,
+	DEVCONF_ADDR_GEN_MODE,
+	DEVCONF_DISABLE_POLICY,
+	DEVCONF_ACCEPT_RA_RT_INFO_MIN_PLEN,
 	DEVCONF_MAX
 };