stress-ng: update to 0.06.02

Fixes following autobuilder errors:
http://autobuild.buildroot.net/results/b527ccdbdfeaba6789528e68df93d9c7216e758a/
http://autobuild.buildroot.net/results/d658f82c66d93515276dcb6cec8d3690459fbf05/

Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/stress-ng/stress-ng.hash

@@ -1,2 +1,2 @@
 # Locally calculated
-sha256	9d17dffafdf8dd71eb5c191973b65d4eb2964ecc31f1d01ad188fd03a0c49f6c	stress-ng-0.04.16.tar.gz
+sha256	7af9759a37902ebf401f92fedeada0b82bcd1e3f4e9e10130177344f143470eb	stress-ng-0.06.02.tar.gz

package/stress-ng/stress-ng.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-STRESS_NG_VERSION = 0.04.16
+STRESS_NG_VERSION = 0.06.02
 STRESS_NG_SITE = http://kernel.ubuntu.com/~cking/tarballs/stress-ng
 STRESS_NG_LICENSE = GPLv2+
 STRESS_NG_LICENSE_FILES = COPYING