trinity: fix build with kernel headers v4.19

new file mode 100644
index 000000000000..438bbfb56aa1
@@ -0,0 +1,48 @@
+From 350c05e5c0d7af5941a9c17f2f86e1c6297d7475 Mon Sep 17 00:00:00 2001
+From: Baruch Siach <[email protected]>
+Date: Wed, 12 Dec 2018 20:52:50 +0200
+Subject: [PATCH] proto-rds: include libc network headers first
+
+To avoid collisions between libc networking headers and header kernels
+the libc headers must appear first in the list of headers. This fixes a
+build issue with kernel headers v4.19:
+
+In file included from include/net.h:5:0,
+                 from net/proto-rds.c:6:
+.../sysroot/usr/include/netinet/in.h:23:8: error: redefinition of 'struct in6_addr'
+ struct in6_addr {
+        ^~~~~~~~
+In file included from .../sysroot/usr/include/linux/rds.h:40:0,
+                 from net/proto-rds.c:4:
+.../sysroot/usr/include/linux/in6.h:33:8: note: originally defined here
+ struct in6_addr {
+		^~~~~~~~
+
+Signed-off-by: Baruch Siach <[email protected]>
+---
+Upstream status: https://github.com/kernelslacker/trinity/pull/29
+
+ net/proto-rds.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/net/proto-rds.c b/net/proto-rds.c
+index c8ff22f886c3..06e36e82d990 100644
+--- a/net/proto-rds.c
++++ b/net/proto-rds.c
+@@ -1,12 +1,12 @@
+ #ifdef USE_RDS
+ #include <sys/socket.h>
+ #include <stdint.h>
+-#include <linux/rds.h>
+ #include <stdlib.h>
+ #include "net.h"
+ #include "compat.h"
+ #include "random.h"
+ #include "utils.h"	// RAND_ARRAY
++#include <linux/rds.h>
+ 
+ static void rds_gen_sockaddr(struct sockaddr **addr, socklen_t *addrlen)
+ {
+-- 
+2.19.2
+