media: atmel: drop bus_info

Let the V4L2 core fill this in.

Fixes this warning:

drivers/staging/media/deprecated/atmel/atmel-isc-base.c: In function 'isc_querycap':
drivers/staging/media/deprecated/atmel/atmel-isc-base.c:496:28: warning: '%s' directive output may be truncated writing up to 35 bytes into a region of size 23 [-Wformat-truncation=]
  496 |                  "platform:%s", isc->v4l2_dev.name);
      |                            ^~
drivers/staging/media/deprecated/atmel/atmel-isc-base.c:495:9: note: 'snprintf' output between 10 and 45 bytes into a destination of size 32
  495 |         snprintf(cap->bus_info, sizeof(cap->bus_info),
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  496 |                  "platform:%s", isc->v4l2_dev.name);
      |                  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>

drivers/staging/media/deprecated/atmel/atmel-isc-base.c

@@ -488,12 +488,8 @@ static const struct vb2_ops isc_vb2_ops = {
 static int isc_querycap(struct file *file, void *priv,
 			 struct v4l2_capability *cap)
 {
-	struct isc_device *isc = video_drvdata(file);
-
 	strscpy(cap->driver, "microchip-isc", sizeof(cap->driver));
 	strscpy(cap->card, "Atmel Image Sensor Controller", sizeof(cap->card));
-	snprintf(cap->bus_info, sizeof(cap->bus_info),
-		 "platform:%s", isc->v4l2_dev.name);
 
 	return 0;
 }