wireguard: bump version to 0.0.20180613

Contains a fix for a crash when forwarding packets from devices that use
flow offloading and a x86 FPU issue on -rt kernels.

Also add a post-release upstream patch fixing a compilation issue related to
memcpy().

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
(cherry picked from commit 630fd8785bd6b9cef3ada692989543ed1de6a39e)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/wireguard/0001-poly1305-add-missing-string.h-header.patch

@@ -0,0 +1,26 @@
+From ed04799b1868f45e05d788e614b9b8cfa4fcab46 Mon Sep 17 00:00:00 2001
+From: "Jason A. Donenfeld" <Jason@zx2c4.com>
+Date: Wed, 20 Jun 2018 14:55:24 +0200
+Subject: [PATCH] poly1305: add missing string.h header
+
+Reported-by: Peter Korsgaard <peter@korsgaard.com>
+Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
+---
+ src/crypto/poly1305.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/src/crypto/poly1305.c b/src/crypto/poly1305.c
+index 26af4ad..65a37d9 100644
+--- a/src/crypto/poly1305.c
++++ b/src/crypto/poly1305.c
+@@ -7,6 +7,7 @@
+ #include "poly1305.h"
+ 
+ #include <linux/kernel.h>
++#include <linux/string.h>
+ 
+ #if defined(CONFIG_X86_64)
+ #include <asm/fpu/api.h>
+-- 
+2.11.0
+

package/wireguard/wireguard.hash

@@ -1,4 +1,4 @@
-# From https://lists.zx2c4.com/pipermail/wireguard/2018-May/002914.html
-sha256 57614239c1f1a99a367f2c816153acda5bffada66a3b8e3b8215f1625784abc9  WireGuard-0.0.20180524.tar.xz
+# From https://lists.zx2c4.com/pipermail/wireguard/2018-June/002984.html
+sha256 c120cdedc3967dcb4ad5c1c7eadd2a1b04ef5dbf2fe60cc8e7c0db337bcda7dc  WireGuard-0.0.20180613.tar.xz
 # Locally calculated
 sha256 8177f97513213526df2cf6184d8ff986c675afb514d4e68a404010521b880643  COPYING

package/wireguard/wireguard.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-WIREGUARD_VERSION = 0.0.20180524
+WIREGUARD_VERSION = 0.0.20180613
 WIREGUARD_SITE = https://git.zx2c4.com/WireGuard/snapshot
 WIREGUARD_SOURCE = WireGuard-$(WIREGUARD_VERSION).tar.xz
 WIREGUARD_LICENSE = GPL-2.0