iio: adc: Add viperboard adc driver

This adds the mfd cell to use the adc part of the Nano River Technologies
viperboard.

Signed-off-by: Lars Poeschel <poeschel@lemonage.de>
Reviewed-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/mfd/viperboard.c b/drivers/mfd/viperboard.c
index 4f74ec868a52..276122b37199 100644
--- a/drivers/mfd/viperboard.c
+++ b/drivers/mfd/viperboard.c
@@ -44,6 +44,9 @@ static struct mfd_cell vprbrd_devs[] = {
         {
                 .name = "viperboard-i2c",
         },
+        {
+                .name = "viperboard-adc",
+        },
 };
 
 static int vprbrd_probe(struct usb_interface *interface,