Add dfu_util package (#3980)

dfu-util is a tool for performing device firmware upgrades over USB.

Tested on ARM.

packages/dfu_util.rb

+require 'package'
+
+class Dfu_util < Package
+  description 'DFU is intended to download and upload firmware to/from devices connected over USB.'
+  homepage 'http://dfu-util.gnumonks.org/'
+  version '0.9'
+  source_url 'http://dfu-util.sourceforge.net/releases/dfu-util-0.9.tar.gz'
+  source_sha256 '36428c6a6cb3088cad5a3592933385253da5f29f2effa61518ee5991ea38f833'
+
+  binary_url ({
+  })
+  binary_sha256 ({
+  })
+
+  depends_on 'libusb'
+
+  def self.build
+    system "./configure \
+      --prefix=#{CREW_PREFIX} \
+      --libdir=#{CREW_LIB_PREFIX}"
+    system 'make'
+  end
+
+  def self.install
+    system 'make', "DESTDIR=#{CREW_DEST_DIR}", 'install'
+  end
+end