staging: media: imx: Make imx_media_of_add_csi() static

The imx_media_of_add_csi() function is only called in its compilation
unit. Make it static and don't export it.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>

drivers/staging/media/imx/imx-media-of.c

@@ -16,8 +16,8 @@
 #include <video/imx-ipu-v3.h>
 #include "imx-media.h"
 
-int imx_media_of_add_csi(struct imx_media_dev *imxmd,
-			 struct device_node *csi_np)
+static int imx_media_of_add_csi(struct imx_media_dev *imxmd,
+				struct device_node *csi_np)
 {
 	struct v4l2_async_subdev *asd;
 	int ret = 0;
@@ -41,7 +41,6 @@ int imx_media_of_add_csi(struct imx_media_dev *imxmd,
 
 	return ret;
 }
-EXPORT_SYMBOL_GPL(imx_media_of_add_csi);
 
 int imx_media_add_of_subdevs(struct imx_media_dev *imxmd,
 			     struct device_node *np)

drivers/staging/media/imx/imx-media.h

@@ -251,8 +251,6 @@ void imx_media_unregister_ipu_internal_subdevs(struct imx_media_dev *imxmd);
 /* imx-media-of.c */
 int imx_media_add_of_subdevs(struct imx_media_dev *dev,
 			     struct device_node *np);
-int imx_media_of_add_csi(struct imx_media_dev *imxmd,
-			 struct device_node *csi_np);
 
 /* imx-media-vdic.c */
 struct v4l2_subdev *imx_media_vdic_register(struct v4l2_device *v4l2_dev,