Documentation: add ibmvmc to toctree(index) and fix warnings

Fix Sphinx warnings in ibmvmc.rst, add an index.rst file in
Documentation/misc-devices/, and insert that index file into the
top-level index file.

Documentation/misc-devices/ibmvmc.rst:2: WARNING: Explicit markup ends without a blank line; unexpected unindent.
Documentation/misc-devices/ibmvmc.rst:: WARNING: document isn't included in any toctree

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Steven Royer <seroyer@linux.ibm.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

1 files changed, 17 insertions, 0 deletions

diff --git a/Documentation/misc-devices/index.rst b/Documentation/misc-devices/index.rst
new file mode 100644
index 000000000000..dfd1f45a3127
--- /dev/null
+++ b/Documentation/misc-devices/index.rst
@@ -0,0 +1,17 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+============================================
+Assorted Miscellaneous Devices Documentation
+============================================
+
+This documentation contains information for assorted devices that do not
+fit into other categories.
+
+.. class:: toc-title
+
+	   Table of contents
+
+.. toctree::
+   :maxdepth: 2
+
+   ibmvmc