iio: Add Intersil isl29125 digital color light sensor driver

datasheet: http://www.intersil.com/content/dam/Intersil/documents/isl2/isl29125.pdf

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
diff --git a/drivers/iio/light/Kconfig b/drivers/iio/light/Kconfig
index c89740d..7d83dca 100644
--- a/drivers/iio/light/Kconfig
+++ b/drivers/iio/light/Kconfig
@@ -62,6 +62,18 @@
 	  To compile this driver as a module, choose M here: the
 	  module will be called gp2ap020a00f.
 
+config ISL29125
+	tristate "Intersil ISL29125 digital color light sensor"
+	depends on I2C
+	select IIO_BUFFER
+	select IIO_TRIGGERED_BUFFER
+	help
+	  Say Y here if you want to build a driver for the Intersil ISL29125
+	  RGB light sensor for I2C.
+
+	  To compile this driver as a module, choose M here: the module will be
+	  called isl29125.
+
 config HID_SENSOR_ALS
 	depends on HID_SENSOR_HUB
 	select IIO_BUFFER