[source] iperf3: Update to 3.1.6

[LEDE Commits]

nbd pushed a commit to source.git, branch master:
https://git.lede-project.org/2faa1edd917d3ec716574aa8da11a8ff10fd67ea

commit 2faa1edd917d3ec716574aa8da11a8ff10fd67ea
Author: Daniel Engberg <daniel.engberg.lists at pyret.net>
AuthorDate: Mon Jan 30 02:22:38 2017 +0100

    iperf3: Update to 3.1.6
    
    Update to 3.1.6
    
    Signed-off-by: Daniel Engberg <daniel.engberg.lists at pyret.net>
---
 package/network/utils/iperf3/Makefile | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/package/network/utils/iperf3/Makefile b/package/network/utils/iperf3/Makefile
index 56782ea..3ee6424 100644
--- a/package/network/utils/iperf3/Makefile
+++ b/package/network/utils/iperf3/Makefile
@@ -8,12 +8,12 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=iperf
-PKG_VERSION:=3.1.4
+PKG_VERSION:=3.1.6
 PKG_RELEASE:=1
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=http://downloads.es.net/pub/iperf
-PKG_HASH:=db61d70ac62003ebe0bf15496bd8c4b3c4b728578a44d0a1a88fcf8afc0e8f76
+PKG_HASH:=70f0c72d9e60c6ecb2c478ed17e4fd81d3b827d57896fee43bcd0c53abccb29d
 
 PKG_MAINTAINER:=Felix Fietkau <nbd at nbd.name>
 PKG_LICENSE:=BSD-3-Clause