mfd: Add WM1811A device ID to wm8994 driver

The WM1811A is a variant of the WM1811 with pin configuration changes.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Samuel Ortiz <sameo@linux.intel.com>

drivers/mfd/wm8994-core.c

@@ -617,6 +617,7 @@ static int wm8994_i2c_remove(struct i2c_client *i2c)
 
 static const struct i2c_device_id wm8994_i2c_id[] = {
 	{ "wm1811", WM1811 },
+	{ "wm1811a", WM1811 },
 	{ "wm8994", WM8994 },
 	{ "wm8958", WM8958 },
 	{ }