iio: dac: vf610_dac: Add IIO DAC driver for Vybrid SoC

Add driver support for DAC peripheral on Vybrid SoC.

Signed-off-by: Sanchayan Maity <maitysanchayan@gmail.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
diff --git a/drivers/iio/dac/Kconfig b/drivers/iio/dac/Kconfig
index 31a1985..a995139 100644
--- a/drivers/iio/dac/Kconfig
+++ b/drivers/iio/dac/Kconfig
@@ -217,4 +217,14 @@
 	  addresses for the devices may be configured via the "base" module
 	  parameter array.
 
+config VF610_DAC
+	tristate "Vybrid vf610 DAC driver"
+	depends on OF
+	depends on HAS_IOMEM
+	help
+	  Say yes here to support Vybrid board digital-to-analog converter.
+
+	  This driver can also be built as a module. If so, the module will
+	  be called vf610_dac.
+
 endmenu