iperf: Add the iperf utility for GPRS performance tests

We really need a sysmocom-feed-packagegroup for all the extra
recipes we care about.

recipes-extra/iperf/iperf-2.0.5/iperf-2.0.5_ManPage.patch

@@ -0,0 +1,8 @@
+diff --git iperf-2.0.5/man/Makefile.am iperf-2.0.5/man/Makefile.am
+ index ed97bc6..728873f 100644
+--- iperf-2.0.5/man/Makefile.am
++++ iperf-2.0.5/man/Makefile.am
+@@ -1,2 +1 @@
+-man_MANS = iperf.1
+-dist_man_MANS = $(man_MANS)
++dist_man_MANS = iperf.1

recipes-extra/iperf/iperf_2.0.5.bb

@@ -0,0 +1,18 @@
+DESCRIPTION = "Iperf is a tool to measure maximum TCP bandwidth, allowing the tuning of various parameters and UDP characteristics"
+HOMEPAGE = "http://dast.nlanr.net/Projects/Iperf/"
+SECTION = "console/network"
+LICENSE = "BSD-2-Clause"
+LIC_FILES_CHKSUM = "file://COPYING;md5=e8478eae9f479e39bc34975193360298"
+
+SRC_URI = " ${SOURCEFORGE_MIRROR}/iperf/${PN}-${PV}.tar.gz \
+            file://iperf-2.0.5_ManPage.patch \
+          "
+
+SRC_URI[md5sum] = "44b5536b67719f4250faed632a3cd016"
+SRC_URI[sha256sum] = "636b4eff0431cea80667ea85a67ce4c68698760a9837e1e9d13096d20362265b"
+
+S = "${WORKDIR}/${PN}-${PV}"
+
+inherit autotools pkgconfig
+
+EXTRA_OECONF = "--exec-prefix=${STAGING_DIR_HOST}${layout_exec_prefix}"