iio: st-accel: add support for lis2dh12

This commit add support for STMicroelectronics lis2dh12 accelerometer.
Datasheet for this device can be found here:

http://www.st.com/st-web-ui/static/active/en/resource/technical/
document/datasheet/DM00091513.pdf

Signed-off-by: Giuseppe Barba <giuseppe.barba@st.com>
Acked-by: Denis Ciocca <denis.ciocca@st.com>
Acked-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
diff --git a/drivers/iio/accel/st_accel_i2c.c b/drivers/iio/accel/st_accel_i2c.c
index 8b9cc84..294a32f 100644
--- a/drivers/iio/accel/st_accel_i2c.c
+++ b/drivers/iio/accel/st_accel_i2c.c
@@ -72,6 +72,10 @@
 		.compatible = "st,lsm303agr-accel",
 		.data = LSM303AGR_ACCEL_DEV_NAME,
 	},
+	{
+		.compatible = "st,lis2dh12-accel",
+		.data = LIS2DH12_ACCEL_DEV_NAME,
+	},
 	{},
 };
 MODULE_DEVICE_TABLE(of, st_accel_of_match);
@@ -121,6 +125,7 @@
 	{ LSM303DLM_ACCEL_DEV_NAME },
 	{ LSM330_ACCEL_DEV_NAME },
 	{ LSM303AGR_ACCEL_DEV_NAME },
+	{ LIS2DH12_ACCEL_DEV_NAME },
 	{},
 };
 MODULE_DEVICE_TABLE(i2c, st_accel_id_table);