media: microchip: don't set bus_info

Let the V4L2 core fill this in.

Fixes these compiler warnings:

drivers/media/platform/microchip/microchip-isc-base.c: In function 'isc_querycap':
drivers/media/platform/microchip/microchip-isc-base.c:486:28: warning: '%s' directive output may be truncated writing up to 35 bytes into a region of size 23 [-Wformat-truncation=]
  486 |                  "platform:%s", isc->v4l2_dev.name);
      |                            ^~
drivers/media/platform/microchip/microchip-isc-base.c:485:9: note: 'snprintf' output between 10 and 45 bytes into a destination of size 32
  485 |         snprintf(cap->bus_info, sizeof(cap->bus_info),
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  486 |                  "platform:%s", isc->v4l2_dev.name);
      |                  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/media/platform/microchip/microchip-isc-base.c: In function 'isc_mc_init':
drivers/media/platform/microchip/microchip-isc-base.c:1996:76: warning: '%s' directive output may be truncated writing up to 35 bytes into a region of size 23 [-Wformat-truncation=]
 1996 |         snprintf(isc->mdev.bus_info, sizeof(isc->mdev.bus_info), "platform:%s",
      |                                                                            ^~
drivers/media/platform/microchip/microchip-isc-base.c:1996:9: note: 'snprintf' output between 10 and 45 bytes into a destination of size 32
 1996 |         snprintf(isc->mdev.bus_info, sizeof(isc->mdev.bus_info), "platform:%s",
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 1997 |                  isc->v4l2_dev.name);
      |                  ~~~~~~~~~~~~~~~~~~~
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>

drivers/media/platform/microchip/microchip-isc-base.c

@@ -478,12 +478,8 @@ 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, "Microchip Image Sensor Controller", sizeof(cap->card));
-	snprintf(cap->bus_info, sizeof(cap->bus_info),
-		 "platform:%s", isc->v4l2_dev.name);
 
 	return 0;
 }
@@ -1993,8 +1989,6 @@ int isc_mc_init(struct isc_device *isc, u32 ver)
 	strscpy(isc->mdev.driver_name, KBUILD_MODNAME,
 		sizeof(isc->mdev.driver_name));
 	strscpy(isc->mdev.model, match->compatible, sizeof(isc->mdev.model));
-	snprintf(isc->mdev.bus_info, sizeof(isc->mdev.bus_info), "platform:%s",
-		 isc->v4l2_dev.name);
 	isc->mdev.hw_revision = ver;
 
 	media_device_init(&isc->mdev);