tools: fix make_ext4fs build with recent glibc

Update to latest make_ext4fs Git HEAD to fix build with recent glibc version
which does not implicitely includes sysmacros.h anymore.

Signed-off-by: Jo-Philipp Wich <jo@mein.io>

target/linux/uml/Makefile

@@ -18,6 +18,7 @@ ARCH:=$(shell uname -m | sed \
 	-e 's/sh[234]/sh/' \
 	-e 's/armeb/arm/' \
 )
+ARCH_PACKAGES:=uml
 BOARD:=uml
 BOARDNAME:=User Mode Linux
 FEATURES:=ext4 audio

tools/make-ext4fs/Makefile

 #
 # Copyright (C) 2015 OpenWrt.org
+# Copyright (C) 2016 LEDE project
 #
 # This is free software, licensed under the GNU General Public License v2.
 # See /LICENSE for more information.
@@ -7,14 +8,14 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=make-ext4fs
-PKG_VERSION:=2015-12-02
+PKG_VERSION:=2016-04-25
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=http://git.openwrt.org/project/make_ext4fs.git
 PKG_SOURCE_PROTO:=git
-PKG_SOURCE_VERSION:=bd53eaafbc2a89a57b8adda38f53098a431fa8f4
+PKG_SOURCE_VERSION:=bf98b86a5df5fcfb658d77fd5e0897ca87a35e8e
 PKG_SOURCE_SUBDIR:=$(PKG_NAME)-$(PKG_VERSION)
-PKG_MIRROR_MD5SUM:=742ed45a833c81de5732a3adb827cde5
+PKG_MIRROR_MD5SUM:=2c4161638d4ff3343e250321126d29e6
 PKG_CAT:=zcat
 
 HOST_BUILD_DIR:=$(BUILD_DIR_HOST)/$(PKG_NAME)-$(PKG_VERSION)