Update to kernel headers to v5.1.3.

Test: Builds and boots taimen.
Test: Ran bionic unit tests.
Change-Id: Ieaca8709d568f075df8cac60c9da2c0ed1916963
diff --git a/libc/kernel/uapi/rdma/rdma_user_rxe.h b/libc/kernel/uapi/rdma/rdma_user_rxe.h
index a57ed1a..e4a2f40 100644
--- a/libc/kernel/uapi/rdma/rdma_user_rxe.h
+++ b/libc/kernel/uapi/rdma/rdma_user_rxe.h
@@ -39,8 +39,7 @@
 struct rxe_av {
   __u8 port_num;
   __u8 network_type;
-  __u16 reserved1;
-  __u32 reserved2;
+  __u8 dmac[6];
   struct rxe_global_route grh;
   union {
     struct sockaddr_in _sockaddr_in;