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/ov5640.c b/drivers/media/i2c/ov5640.c
index 0dae0438aa80..861ebaaa20e3 100644
--- a/drivers/media/i2c/ov5640.c
+++ b/drivers/media/i2c/ov5640.c
@@ -3898,7 +3898,7 @@ static int ov5640_probe(struct i2c_client *client)
 					       ov5640_dvp_default_fmt;
 
 	/* get system clock (xclk) */
-	sensor->xclk = devm_clk_get(dev, "xclk");
+	sensor->xclk = devm_v4l2_sensor_clk_get(dev, "xclk");
 	if (IS_ERR(sensor->xclk)) {
 		dev_err(dev, "failed to get xclk\n");
 		return PTR_ERR(sensor->xclk);