docs: render DIP switches as verbatim text
Render images of DIP switches as <pre> html tags/verbatim text. This
fixes the sphinx errors:

    Documentation/boards/imx/Element14-WaRP7.rst:25: ERROR: Malformed table.
    Documentation/boards/imx/Element14-WaRP7.rst:36: ERROR: Malformed table.
    Documentation/boards/imx/Element14-WaRP7.rst:47: ERROR: Malformed table.

Signed-off-by: Stefan Lengfeld <contact@stefanchrist.eu>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
1 parent 4477998 commit 2c5869d8cce0176da3ff95b8be7f24286668e057
@Stefan Lengfeld Stefan Lengfeld authored on 15 May 2017
Sascha Hauer committed on 17 May 2017
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Documentation/boards/imx/Element14-WaRP7.rst