[source] tools/libressl: update to 2.5.4

[LEDE Commits]

nbd pushed a commit to source.git, branch master:
https://git.lede-project.org/d7a3120cdcc1aeed5a95636803d250e35ba8706e

commit d7a3120cdcc1aeed5a95636803d250e35ba8706e
Author: Hannu Nyman <hannu.nyman at iki.fi>
AuthorDate: Sun May 7 20:52:32 2017 +0300

    tools/libressl: update to 2.5.4
    
    Signed-off-by: Hannu Nyman <hannu.nyman at iki.fi>
---
 tools/libressl/Makefile | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/tools/libressl/Makefile b/tools/libressl/Makefile
index 9338896..5679320 100644
--- a/tools/libressl/Makefile
+++ b/tools/libressl/Makefile
@@ -1,5 +1,5 @@
 #
-# Copyright (C) 2016 LEDE project
+# Copyright (C) 2016-2017 LEDE project
 #
 # This is free software, licensed under the GNU General Public License v2.
 # See /LICENSE for more information.
@@ -8,8 +8,8 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=libressl
-PKG_VERSION:=2.5.1
-PKG_HASH:=f71ae0a824b78fb1a47ffa23c9c26e9d96c5c9b29234eacedce6b4c7740287cd
+PKG_VERSION:=2.5.4
+PKG_HASH:=107a5b522fbb8318d4c3be668075e5e607296f0a9255d71674caa94571336efa
 PKG_RELEASE:=1
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz