[PATCH] Documentation/sphinx: Fix Directive import error

[Takashi Iwai]

The sphinx.util.compat Directive stuff was deprecated in the recent
Sphinx version, and now we get a build error.

Let's take a fallback to the newer one, from docutils.parsers.rst.

Bugzilla: https://bugzilla.opensuse.org/show_bug.cgi?id=1083694
Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
---

I'm no expert of sphinx nor python, so something might be wrong.
Please check it.

--- a/Documentation/sphinx/kerneldoc.py
+++ b/Documentation/sphinx/kerneldoc.py
@@ -37,7 +37,10 @@ import glob
 from docutils import nodes, statemachine
 from docutils.statemachine import ViewList
 from docutils.parsers.rst import directives
-from sphinx.util.compat import Directive
+try:
+    from sphinx.util.compat import Directive
+except ImportError:
+    from docutils.parsers.rst import directives, Directive
 from sphinx.ext.autodoc import AutodocReporter
 
 __version__  = '1.0'