py-smbus: Use setuptools instead of distutils

As per [1], distutils is deprecated in Python 3.10 and will be removed
entirely in Python 3.12.

As setuptools is essentially an enhanced version of distutils, it's
trivial to port to that.

[1] https://docs.python.org/3/whatsnew/3.10.html#distutils-deprecated

Signed-off-by: Ross Burton <ross.burton@arm.com>
Signed-off-by: Jean Delvare <jdelvare@suse.de>

py-smbus/setup.py

@@ -1,6 +1,6 @@
 #!/usr/bin/env python
 
-from distutils.core import setup, Extension
+from setuptools import setup, Extension
 
 setup(	name="smbus",
 	version="1.1",