python-setuptools: enable Python 3.x support

Add missing XML dependency.

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

package/python-setuptools/Config.in

@@ -1,7 +1,9 @@
 config BR2_PACKAGE_PYTHON_SETUPTOOLS
 	bool "python-setuptools"
-	depends on BR2_PACKAGE_PYTHON
-	select BR2_PACKAGE_PYTHON_ZLIB
+	select BR2_PACKAGE_PYTHON_ZLIB if BR2_PACKAGE_PYTHON # runtime
+	select BR2_PACKAGE_PYTHON3_ZLIB if BR2_PACKAGE_PYTHON3 # runtime
+	select BR2_PACKAGE_PYTHON_PYEXPAT if BR2_PACKAGE_PYTHON # runtime
+	select BR2_PACKAGE_PYTHON3_PYEXPAT if BR2_PACKAGE_PYTHON3 # runtime
 	help
 	  Download, build, install, upgrade, and uninstall Python packages.