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/ov7740.c b/drivers/media/i2c/ov7740.c
index 1f1c0de8e510..280855667655 100644
--- a/drivers/media/i2c/ov7740.c
+++ b/drivers/media/i2c/ov7740.c
@@ -1036,7 +1036,7 @@ static int ov7740_probe(struct i2c_client *client)
 	if (!ov7740)
 		return -ENOMEM;
 
-	ov7740->xvclk = devm_clk_get(&client->dev, "xvclk");
+	ov7740->xvclk = devm_v4l2_sensor_clk_get(&client->dev, "xvclk");
 	if (IS_ERR(ov7740->xvclk)) {
 		ret = PTR_ERR(ov7740->xvclk);
 		dev_err(&client->dev,