docs: kernel_abi.py: fix UTF-8 support

# -*- coding: utf-8; mode: python -*-

# coding=utf-8

# SPDX-License-Identifier: GPL-2.0

#

u"""

    kernel-abi

    ~~~~~~~~~~

"""

import codecs

import sys

import os

from os import path

__version__  = '1.0'

# We can't assume that six is installed

PY3 = sys.version_info[0] == 3

PY2 = sys.version_info[0] == 2

if PY3:

    # pylint: disable=C0103, W0622

    unicode     = str

    basestring  = str

def setup(app):

    app.add_directive("kernel-abi", KernelCmd)

                cmd

                , stdout = subprocess.PIPE

                , stderr = subprocess.PIPE

                , universal_newlines = True

                , **kwargs

            )

            out, err = proc.communicate()

            if err:

                self.warn(err)

            out, err = codecs.decode(out, 'utf-8'), codecs.decode(err, 'utf-8')

            if proc.returncode != 0:

                raise self.severe(

                    u"command '%s' failed with return code %d"

        except OSError as exc:

            raise self.severe(u"problems with '%s' directive: %s."

                              % (self.name, ErrorString(exc)))

        return unicode(out)

        return out

    def nestedParse(self, lines, fname):

        content = ViewList()