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/ov6650.c b/drivers/media/i2c/ov6650.c
index 9c7627161142..251a9058fe18 100644
--- a/drivers/media/i2c/ov6650.c
+++ b/drivers/media/i2c/ov6650.c
@@ -898,7 +898,7 @@ static int ov6650_video_probe(struct v4l2_subdev *sd)
 	u8 pidh, pidl, midh, midl;
 	int i, ret = 0;
 
-	priv->clk = devm_clk_get(&client->dev, NULL);
+	priv->clk = devm_v4l2_sensor_clk_get(&client->dev, NULL);
 	if (IS_ERR(priv->clk)) {
 		ret = PTR_ERR(priv->clk);
 		dev_err(&client->dev, "clk request err: %d\n", ret);