python-netaddr: change setup type to setuptools

The latest netaddr version switched to setuptools.

Fixes:

http://autobuild.buildroot.net/results/e9b/e9b0013abe7e866fd224593f90ec30bdc809151f

Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/python-netaddr/python-netaddr.mk

@@ -9,6 +9,6 @@ PYTHON_NETADDR_SOURCE = netaddr-$(PYTHON_NETADDR_VERSION).tar.gz
 PYTHON_NETADDR_SITE = https://pypi.python.org/packages/0c/13/7cbb180b52201c07c796243eeff4c256b053656da5cfe3916c3f5b57b3a0
 PYTHON_NETADDR_LICENSE = BSD-3-Clause
 PYTHON_NETADDR_LICENSE_FILES = LICENSE
-PYTHON_NETADDR_SETUP_TYPE = distutils
+PYTHON_NETADDR_SETUP_TYPE = setuptools
 
 $(eval $(python-package))