Update to kernel headers v5.3.2.

Test: Builds and run unit tests on taimen/cuttlefish.
Change-Id: I6ebd8f179d159ac974555e8edca588083e8081b3
diff --git a/libc/kernel/uapi/linux/rtnetlink.h b/libc/kernel/uapi/linux/rtnetlink.h
index 33af1b3..b0feb7e 100644
--- a/libc/kernel/uapi/linux/rtnetlink.h
+++ b/libc/kernel/uapi/linux/rtnetlink.h
@@ -139,6 +139,12 @@
 #define RTM_DELCHAIN RTM_DELCHAIN
   RTM_GETCHAIN,
 #define RTM_GETCHAIN RTM_GETCHAIN
+  RTM_NEWNEXTHOP = 104,
+#define RTM_NEWNEXTHOP RTM_NEWNEXTHOP
+  RTM_DELNEXTHOP,
+#define RTM_DELNEXTHOP RTM_DELNEXTHOP
+  RTM_GETNEXTHOP,
+#define RTM_GETNEXTHOP RTM_GETNEXTHOP
   __RTM_MAX,
 #define RTM_MAX (((__RTM_MAX + 3) & ~3) - 1)
 };
@@ -257,6 +263,7 @@
   RTA_IP_PROTO,
   RTA_SPORT,
   RTA_DPORT,
+  RTA_NH_ID,
   __RTA_MAX
 };
 #define RTA_MAX (__RTA_MAX - 1)
@@ -522,6 +529,8 @@
 #define RTNLGRP_IPV4_MROUTE_R RTNLGRP_IPV4_MROUTE_R
   RTNLGRP_IPV6_MROUTE_R,
 #define RTNLGRP_IPV6_MROUTE_R RTNLGRP_IPV6_MROUTE_R
+  RTNLGRP_NEXTHOP,
+#define RTNLGRP_NEXTHOP RTNLGRP_NEXTHOP
   __RTNLGRP_MAX
 };
 #define RTNLGRP_MAX (__RTNLGRP_MAX - 1)