devm_clk_get() fails on ACPI-based platforms, where firmware does not
provide a direct reference to the clock producer.

Replace devm_clk_get() with the new v4l2 helper
devm_v4l2_sensor_clk_get() that works on both DT- and ACPI-based
platforms to retrieve a reference to the clock producer from firmware.

Signed-off-by: Mehdi Djait <mehdi.djait@linux.intel.com>

diff --git a/drivers/media/i2c/mt9t112.c b/drivers/media/i2c/mt9t112.c
index 878dff9b7577..685234577f30 100644
--- a/drivers/media/i2c/mt9t112.c
+++ b/drivers/media/i2c/mt9t112.c
@@ -1078,7 +1078,7 @@ static int mt9t112_probe(struct i2c_client *client)
 
 	v4l2_i2c_subdev_init(&priv->subdev, client, &mt9t112_subdev_ops);
 
-	priv->clk = devm_clk_get(&client->dev, "extclk");
+	priv->clk = devm_v4l2_sensor_clk_get(&client->dev, "extclk");
 	if (PTR_ERR(priv->clk) == -ENOENT) {
 		priv->clk = NULL;
 	} else if (IS_ERR(priv->clk)) {