package/iperf: bump to version 2.2.0

For release note, see after the file list at:
https://sourceforge.net/projects/iperf2/files/

Note: the md5 file hash is also added, because it is published on
download page.

Signed-off-by: Julien Olivain <ju.o@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/iperf/iperf.hash

@@ -1,6 +1,7 @@
 # From https://sourceforge.net/projects/iperf2/files/
-sha1  e7b669c2e8747df95b59956e83ff53d3971d7a5f  iperf-2.1.9.tar.gz
+md5  34bb6ac1abeb801bf3f729794dc5ac36  iperf-2.2.0.tar.gz
+sha1  bcbd101ab36f3faacaab1a765a96806ca49a1495  iperf-2.2.0.tar.gz
 
 # Locally computed:
-sha256  5c0771aab00ef14520013aef01675977816e23bb8f5d9fde016f90eb2f1be788  iperf-2.1.9.tar.gz
+sha256  16810a9575e4c6dd65e4a18ab5df3cdac6730b3c832cf080a8990f132f68364a  iperf-2.2.0.tar.gz
 sha256  5f9f5c4feca3347c3b3c0ada8b16b4e6b698aac4e6f016a24adf61a5915336d1  COPYING

package/iperf/iperf.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-IPERF_VERSION = 2.1.9
+IPERF_VERSION = 2.2.0
 IPERF_SITE = https://downloads.sourceforge.net/project/iperf2
 IPERF_LICENSE = MIT-like
 IPERF_LICENSE_FILES = COPYING