iio: gyro: Add itg3200

This patch adds support for the InvenSense itg3200.
The itg3200 is a three-axis gyro with 16-bit ADC and
I2C interface.

Signed-off-by: Manuel Stahl <manuel.stahl@iis.fraunhofer.de>
Reviewed-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
diff --git a/drivers/iio/gyro/Kconfig b/drivers/iio/gyro/Kconfig
index 51ac6bc..6be4628 100644
--- a/drivers/iio/gyro/Kconfig
+++ b/drivers/iio/gyro/Kconfig
@@ -70,4 +70,12 @@
 	depends on IIO_ST_GYRO_3AXIS
 	depends on IIO_ST_SENSORS_SPI
 
+config ITG3200
+	tristate "InvenSense ITG3200 Digital 3-Axis Gyroscope I2C driver"
+	depends on I2C
+	select IIO_TRIGGERED_BUFFER if IIO_BUFFER
+	help
+	  Say yes here to add support for the InvenSense ITG3200 digital
+	  3-axis gyroscope sensor.
+
 endmenu