media: i2c: ov9650: Use the v4l2 helper for obtaining the clock

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.

Reviewed-by: Lad Prabhakar <[e-mail]>
Reviewed-by: Laurent Pinchart <[e-mail]>
Signed-off-by: Mehdi Djait <[e-mail]>
Signed-off-by: Sakari Ailus <[e-mail]>
Signed-off-by: Hans Verkuil <[e-mail]>

drivers/media/i2c/ov9650.c

···
 	}
 
 	if (dev_fwnode(&client->dev)) {
-		ov965x->clk = devm_clk_get(&client->dev, NULL);
+		ov965x->clk = devm_v4l2_sensor_clk_get(&client->dev, NULL);
 		if (IS_ERR(ov965x->clk))
-			return PTR_ERR(ov965x->clk);
+			return dev_err_probe(&client->dev, PTR_ERR(ov965x->clk),
+					     "failed to get the clock\n");
 		ov965x->mclk_frequency = clk_get_rate(ov965x->clk);
 
 		ret = ov965x_configure_gpios(ov965x);