iio:ad5446: Add device ids for ad5301/ad5311/ad5321

The ad5301/ad5311/ad5321 are software compatible to the ad5602/ad5612/ad5622.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
diff --git a/drivers/iio/dac/ad5446.c b/drivers/iio/dac/ad5446.c
index 2b0968f..3310cbb 100644
--- a/drivers/iio/dac/ad5446.c
+++ b/drivers/iio/dac/ad5446.c
@@ -552,6 +552,9 @@
 }
 
 static const struct i2c_device_id ad5446_i2c_ids[] = {
+	{"ad5301", ID_AD5602},
+	{"ad5311", ID_AD5612},
+	{"ad5321", ID_AD5622},
 	{"ad5602", ID_AD5602},
 	{"ad5612", ID_AD5612},
 	{"ad5622", ID_AD5622},