docs: fpga: convert docs to ReST and rename to *.rst

The dfl.txt file is almost there. It needs just a few
adjustments to be properly parsed.

The conversion is actually:
  - add blank lines and identation in order to identify paragraphs;
  - fix tables markups;
  - add some lists markups;
  - mark literal blocks;
  - adjust title markups.

At its new index.rst, let's add a :orphan: while this is not linked to
the main index.rst file, in order to avoid build warnings.

Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

1 files changed, 17 insertions, 0 deletions

diff --git a/Documentation/fpga/index.rst b/Documentation/fpga/index.rst
new file mode 100644
index 000000000000..2c87d1ea084f
--- /dev/null
+++ b/Documentation/fpga/index.rst
@@ -0,0 +1,17 @@
+:orphan:
+
+====
+fpga
+====
+
+.. toctree::
+    :maxdepth: 1
+
+    dfl
+
+.. only::  subproject and html
+
+   Indices
+   =======
+
+   * :ref:`genindex`