The mcp3421 is the single channel variant of the mcp342x family and
can be supported by the mcp342x driver.
Signed-off-by: NSascha Hauer <s.hauer@pengutronix.de>
Cc: devicetree@vger.kernel.org
Acked-by: NRob Herring <robh@kernel.org>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>